Chemistry Chemistry Practice Problems Solutions Library

Periodic Table Solutions Library

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175 solutions

Periodic Table

Q. Which compound will form the most intensely colored 0.01 M aqueous solution? Please explain why.(A) KMnO4(B) KClO4(C) Kal(SO4)2(D) KI

Solved • Apr 30, 2020

Periodic Table

Q. How many valence electrons does a nitrogen atom have? a. 5b. 8 c. 7 d. 3 e. 15

Solved • Apr 29, 2020

Periodic Table

Q. Which of the following sets contains elements that will form ions with a charge of 2-?  a) As, P, and N b) Te, S, and Oc) Si, P, and S d) Sr, Ca, a...

Solved • Apr 29, 2020

Periodic Table

Q. 1. Name an element in the fifth period (row) of the periodic table with five valence electrons. Express your answer as a chemical symbol.2. Name an...

Solved • Apr 27, 2020

Periodic Table

Q. An element belongs to Group 9. What common name might be used to describe the group to which this element belongs?a) alkaline earthb) semimetalc) n...

Solved • Apr 23, 2020

Periodic Table

Q. What is the charge of the common ion formed by each of these atoms? Either -2, -1, +1, or +2.S, Br, I, Li, Sr, Mg, Na, Cs, Ba, F, and OHow are thes...

Solved • Apr 23, 2020

Periodic Table

Q.  If the following elements were to form ions, what is the expectant charge? Drag the appropriate elements to their respective bins.

Solved • Apr 22, 2020

Periodic Table

Q. Part B: Arrange the elements in decreasing order of the number of valence electrons. Rank from most to least number of valence electrons. To rank i...

Solved • Mar 25, 2020

Periodic Table

Q. For each of the elements below, identify the charge of its most common ion.Cl, Li, S, Al

Solved • Mar 20, 2020

Periodic Table

Q. Which of the following is a nonmetal?a. Cab. Brc. Fed. Sbe. Ho

Solved • Nov 22, 2019

Periodic Table

Q. Which should give the most vigorous reaction when dropped in water? (Hint: Remember the types of reactions we studied at the end of Chapter 7.) A) ...

Solved • Oct 25, 2019

Periodic Table

Q. Metals are least known for:A. Ductility B. Brittleness C. Malleability D. Strong electrical conductivity E. Shininess

Solved • Oct 9, 2019

Periodic Table

Q. Which characteristics below describes a solid crystal of NaCl?A. Brittle, low melting point, strong electrical conductor B. Malleable, high melting...

Solved • Oct 9, 2019

Periodic Table

Q. Predict the charge that an aluminum ion would have.a. 5-b. 1+c. 1-d. 2+e.3+

Solved • Sep 30, 2019

Periodic Table

Q. Which of the following elements has chemical properties most similar to barium?a. ironb. calciumc. cesiumd. xenone. carbon

Solved • Sep 30, 2019

Periodic Table

Q. Iodine is an example of A) a heterogeneous mixture. B) an element. C) a homogeneous mixture. D) a compound.

Solved • Sep 13, 2019

Periodic Table

Q. Which one of the following pairs has the element name and symbol correctly matched?A. P, potassiumB. C, copperC. Mg, manganeseD. Ag, silverE. Sn, s...

Solved • Sep 12, 2019

Periodic Table

Q. Which one of the following is a metalloid?A) GeB) SC) BrD) PbE) C

Solved • Aug 29, 2019

Periodic Table

Q. To which group in the periodic table does each of the following element belong? How many valence electrons do atoms of the element have?lithium

Solved • Aug 25, 2019

Periodic Table

Q. What element in the fourth period of the periodic table has 5 valence electrons?

Solved • Aug 7, 2019

Periodic Table

Q. What is the mass number and the atomic number of Boron-11?

Solved • Aug 7, 2019

Periodic Table

Q. In which set of elements would all members be expected to have very similar chemical properties?A) P, Se, I B) Cl, Br, Na C) Si, As, Te D) Ne, Na, ...

Solved • Aug 5, 2019

Periodic Table

Q. In which set elements would all members be expected to have very similar chemical properties? a. O, S, Seb. N, O, F c. Na, Mg, Kd. S, Se, Si e. Ne,...

Solved • Aug 5, 2019

Periodic Table

Q. 1. What is the atomic number of the element located in group 16, period 2 of the periodic table?2. If a new element were discovered and it was foun...

Solved • Aug 2, 2019

Periodic Table

Q. Discussing this chapter, a classmate says, “An element that commonly forms a cation is a metal.” Do you agree or disagree?

Solved • Nov 12, 2018

Periodic Table

Q. Discussing this chapter, a classmate says, "Since elements that form cations are metals and elements that form anions are nonmetals, elements that ...

Solved • Nov 12, 2018

Periodic Table

Q. Do you think sulfur is malleable?Figure Sulfur, known to the medieval world as "brimstone", is a nonmetal.

Solved • Nov 12, 2018

Periodic Table

Q. Consider the stable elements through lead (Z=82).In how many instances are the atomic weights of the elements out of order relative to the atomic n...

Solved • Nov 12, 2018

Periodic Table

Q. A historian discovers a nineteenth-century notebook in which some observations, dated 1822, were recorded on a substance thought to be a new elemen...

Solved • Nov 12, 2018

Periodic Table

Q. The prefix eka- comes from the Sanskrit word for one. Mendeleev used this prefix to indicate that the unknown element was one place away from the k...

Solved • Nov 12, 2018

Periodic Table

Q. Which of the following elements have molecules as their basic units?a. hydrogenb. iodinec. leadd. oxygen

Solved • Oct 31, 2018

Periodic Table

Q. The symbol CO stands for carbon monoxide, but the symbol Co stands for the element cobalt. Explain.

Solved • Oct 25, 2018

Periodic Table

Q. At room temperature, a certain element is found to be a soft, silver-colored solid that reacts violently with water and is a good conductor of elec...

Solved • Oct 25, 2018

Periodic Table

Q. At room temperature, a certain element is found to be shiny, silver-colored solid that is a poor conductor of electricity. When a sample of the ele...

Solved • Oct 25, 2018

Periodic Table

Q. The radioactive element indicated on the following periodic table is used in smoke detectors.The black bar shown in rows six and seven indicate tha...

Solved • Oct 25, 2018

Periodic Table

Q. What is a semimetal?

Solved • Oct 25, 2018

Periodic Table

Q. At room temperature, a certain element is yellow crystalline solid. It does not conduct electricity, and when hit with a hammer it shatters. Is the...

Solved • Oct 25, 2018

Periodic Table

Q. Name two ways in which the metals shown above differ in general appearance from the nonmetals.

Solved • Oct 25, 2018

Periodic Table

Q. Does the drawing  represent a neutral atom or an ion?

Solved • Oct 25, 2018

Periodic Table

Q. Fill in the gaps in the following table:SymbolCo3+Protons347680Neutrons46116120Electrons3678Mass number59Net charge2+Complete the sixth raw of the ...

Solved • Oct 25, 2018

Periodic Table

Q. Each of the following elements is capable of forming an ion in chemical reactions.By referring to the periodic table, predict the charge of the mos...

Solved • Oct 25, 2018

Periodic Table

Q. Each of the following elements is capable of forming an ion in chemical reactions.By referring to the periodic table, predict the charge of the mos...

Solved • Oct 25, 2018

Periodic Table

Q. Each of the following elements is capable of forming an ion in chemical reactions.By referring to the periodic table, predict the charge of the mos...

Solved • Oct 25, 2018

Periodic Table

Q. Five of the boxes in the following periodic table are colored. Predict the charge on the ion associated with each of these elements.Predict the cha...

Solved • Oct 25, 2018

Periodic Table

Q. Five of the boxes in the following periodic table are colored. Predict the charge on the ion associated with each of these elements.Predict the cha...

Solved • Oct 25, 2018

Periodic Table

Q. Five of the boxes in the following periodic table are colored. Predict the charge on the ion associated with each of these elements.Predict the cha...

Solved • Oct 25, 2018

Periodic Table

Q. Four of the boxes in the following periodic table are colored.Which of these are metals and which are nonmetals?

Solved • Oct 25, 2018

Periodic Table

Q. Four of the boxes in the following periodic table are colored.Which one is an alkaline earth metal?        

Solved • Oct 25, 2018

Periodic Table

Q. Four of the boxes in the following periodic table are colored.Which one is a noble gas?

Solved • Oct 25, 2018

Periodic Table

Q. Arranging elements by atomic number reveals a periodic pattern of properties. This pattern is the basis of the periodic table.If F is a reactive no...

Solved • Oct 25, 2018

Periodic Table

Q. Predict the charges of the monatomic (single-atom) ions formed by these main-group elements.(a) N(b) Rb

Solved • Oct 25, 2018

Periodic Table

Q. Determine whether or not each element is a main-group element.vanadium

Solved • Oct 25, 2018

Periodic Table

Q. Classify each of the following elements as an alkali metal, alkaline earth metal, halogen, or noble gas.a. sodiumb. iodinec. calciumd. bariume. kry...

Solved • Oct 25, 2018

Periodic Table

Q. Which of the following pairs of elements do you expect to be most similar?a. N and Nib. Mo and Snc. Na and Mgd. Cl and Fe. Si and P

Solved • Oct 25, 2018

Periodic Table

Q. Predict the charge on the monatomic ion formed from Cs in binary ionic compounds.

Solved • Oct 22, 2018

Periodic Table

Q. Rubidium and bromine atoms are depicted below.What monatomic ions do they form?

Solved • Oct 22, 2018

Periodic Table

Q. What monatomic ions would you expect radium (Z = 88) and selenium (Z = 34) to form?

Solved • Oct 12, 2018

Periodic Table

Q. What monatomic ions would you expect potassium (Z = 19) and bromine (Z = 35) to form?

Solved • Oct 12, 2018

Periodic Table

Q. Fill in the blanks:(c) Group 1B(11) consists of the coinage metals. The symbol and atomic mass of the coinage metal whose atoms have the fewest ele...

Solved • Oct 12, 2018

Periodic Table

Q. The element sulfur is in group ____ and period _____. The element gallium is in group ______ and period ______. The element nickel is in group ____...

Solved • Sep 19, 2018

Periodic Table

Q. Give the symbol for an element that is 1) a halogen. ____ 2) an alkali metal. ____ 3) a noble gas. ____ 4) an alkaline earth metal. ____

Solved • Sep 19, 2018

Periodic Table

Q. Which element does X represent in the following expression: 5525X? Enter the chemical symbol of the element.

Solved • Sep 17, 2018

Periodic Table

Q. Match the following symbols with their elements names.

Solved • Sep 7, 2018

Periodic Table

Q. Elements in group 1A are best describe as:(i) Alkali Metals. Soft, silvery metals that react rapidly with water.(ii) Halogens. Colorful, corrosive ...

Solved • Sep 7, 2018

Periodic Table

Q. Which of the following elements consists of molecules containing four atoms? Choose the correct answer below. a. fluorine b. sulfur c. phosphorus d...

Solved • Aug 14, 2018

Periodic Table

Q. Which of these is least characteristic of metals?a. Moderately high melting pointb. Brittlenessc. Malleabilityd. Good thermal conductivitye. Good e...

Solved • Jul 3, 2018

Periodic Table

Q. Which of the following forms cations that can have different charges? a. lead b. cobalt c. Cr d. Ce e. all of the aboveWhich among the following el...

Solved • Jun 26, 2018

Periodic Table

Q. Part AWhich row of the periodic table contains the most recently discovered elements? Express your answer as an integer. Part BCan you suggest a re...

Solved • Jun 25, 2018

Periodic Table

Q. What is the name of the alkali metal that is in period 2? What is the name of the halogen that is in period 5? What is the name of the alkaline ear...

Solved • Jun 19, 2018

Periodic Table

Q. Give the symbol for an element that is

Solved • Jun 19, 2018

Periodic Table

Q. Which of the following elements do NOT normally exist as diatomic molecules?

Solved • Jun 8, 2018

Periodic Table

Q. The periodic table is based on an element's a. molecular size. b. atomic mass. c. atomic number. d. molecular mass.

Solved • Apr 2, 2018

Periodic Table

Q. The element fluorine is classified in the periodic table as a/an a. metal. b. alkali metal. c. metalloid. d. halogen.

Solved • Apr 2, 2018

Periodic Table

Q. Classify each element as a metal, nonmetal, or semimetal.a. Asb. Brc. Pbd. Fee. Krf. Sn

Solved • Mar 22, 2018

Periodic Table

Q. Metals and nonmetals can react with each other to form ions. Complete these statements.A potassium atom gains or loses (electrons/protons/neutrons)...

Solved • Mar 22, 2018

Periodic Table

Q. State the number of electrons lost or gained when the following elements form ions: Sb, Group 2A, As, Te, I

Solved • Mar 21, 2018

Periodic Table

Q. Classify each element as a metal, nonmetal, or semimetal. a. S  b. At c. He d. Al e. Mn f. Sr  

Solved • Mar 19, 2018

Periodic Table

Q. Which elements do you expect to lose electrons in their chemical reactions? Which do you expect to gain electrons?i. Gaii. Pbiii. Cliv. N

Solved • Mar 13, 2018

Periodic Table

Q. What is the charge on the most stable ion of each of the following elements?K, I, Mg, O, Al, N, Ba, S

Solved • Feb 22, 2018

Periodic Table

Q. Fill in the blanks to complete the sentences below. 1. Copper, silver, and gold have all been know since ancient times because they appear in natur...

Solved • Feb 14, 2018

Periodic Table

Q. Select all the diatomic elements.

Solved • Dec 14, 2017

Periodic Table

Q. Which of the following is a metal?a. Rbb. Atc. Sbd. Gee. Si

Solved • Jul 13, 2017

Periodic Table

Q. Which of the following elements does NOT have a symbol taken from a LATIN name? (A) iron (B) copper (C) sodium (D) potassium (E) phosphorus

Solved • Jul 13, 2017

Periodic Table

Q. Which ions should be formed by magnesium, nitrogen, and chlorine, respectively? (A) Mg2+, N3-, Cl- (B) Mn7+, N3-, C4+ (C) Mg2+, N5+, Cl- (D) Mg...

Solved • Jul 12, 2017

Periodic Table

Q. Which of the following elements is NOT correctly matched with its symbol? (A) sodium is Na (B) phosphorus is P (C) chlorine is Cl (D) carbon is...

Solved • Jul 12, 2017

Periodic Table

Q. What type of ions would be formed by potassium, aluminum and oxygen atoms, respectively? (A) P+, Al3+, O2- (B) K+, Al3+, O2- (C) K+, Al+, O6+ (...

Solved • Jul 11, 2017

Periodic Table

Q. All the following elements exist as diatomic gases at room temperature and atmospheric pressure except H Cl N Ar O

Solved • Jul 10, 2017

Periodic Table

Q. Which of the following does NOT describe a metal?A) Found on the left side of the periodic table.B) Good conductor of heat.C) Form ionic compounds ...

Solved • Jul 3, 2017

Periodic Table

Q. Which of the following characteristics are true of nonmetals?            I. good thermal and electrical conductorsII. good thermal and electrical i...

Solved • Jul 3, 2017

Periodic Table

Q. Beryllium is an ____ and silver is a ____. A. alkaline earth metal; halogen B. alkali metal; nonmetal C. alkali metal; halogen D. alkali metal;...

Solved • Jun 29, 2017

Periodic Table

Q. Which of the following does NOT describe a metal? A) good conductor of heat B) good conductor of electricity C) tends to gain electrons D) form...

Solved • Jun 16, 2017

Periodic Table

Q. Ions differ in the number of A) electrons. B) neutrons. C) protons. D) neutrons and protons. E) electrons and protons.

Solved • Jun 16, 2017

Periodic Table

Q. Identify the group or family to which each of the following elements belongs by placing the letter corresponding to the group in the blank to the l...

Solved • Jun 2, 2017

Periodic Table

Q. Which of the following is not a correct name, symbol combination? a. calcium, Ca b. sodium, Na c. mercury, Hg d. uranium, U e. fluorine, FL

Solved • May 26, 2017

Periodic Table

Q. The names of the elements whose symbols are Si, P, Mn, and S are, respectively, a. silicon, potassium, manganese, and sulfur. b. silver, phosphor...

Solved • May 26, 2017

Periodic Table

Q. Which atom is most likely to form only a 2+ ion? a. iron b. barium c. aluminum d. copper e. fluorine  

Solved • May 25, 2017

Periodic Table

Q. List the monatomic ions that the elements below are expected to form when they are incorporated into an ionic compound (give the symbol and the cha...

Solved • Feb 16, 2017

Periodic Table

Q. Identify the group or family to which each of the following elements belongs by placing the letter corresponding to the group in the blank to the l...

Solved • Feb 16, 2017

Periodic Table

Q. Which diagram(s) best characterize(s) an element? 1. I only 2. III and IV only 3. II only  4. I and II only

Solved • Jan 23, 2017

Periodic Table

Q. Which of the following elements is an alkaline earth metal? a. Cs b. Cu c. Mg d. Ti e. Br

Solved • Oct 28, 2016