Chemistry Chemistry Practice Problems Solutions Library

Periodic Table Solutions Library

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330 solutions

Periodic Table

Q. Another element is silvery-white with a shiny luster, is very brittle, and forms ions with a −2 charge. Give one possible identity of this element....

Solved • Jul 2, 2020

Periodic Table

Q. A certain element has a melting point over 700°C and a density less than 2.00 g/cm3 . Give one possible identity for this element. Enter the symbol...

Solved • Jul 2, 2020

Periodic Table

Q. Elements of group 8A of the periodic table are known as the noble gases. Determine which of the following properties are characteristic of all natu...

Solved • Jul 2, 2020

Periodic Table

Q. Of the well-characterized elements of group 7A, which would exhibit the following properties?It reacts with the alkali metals (M) to form a salt MX...

Solved • Jul 2, 2020

Periodic Table

Q. A main group metal was studied and found to exhibit the following properties:It does not occur free in nature.It loses valence electrons readilyIt ...

Solved • Jul 2, 2020

Periodic Table

Q. A sample of soil from a newly discovered cave is analyzed by a team of explorers. They find an element that is a good conductor of electricity. It ...

Solved • Jul 2, 2020

Periodic Table

Q. In the group 3 to group 12 elements, which subshell is filled up going across the rows?A) s subshellB) p subshellC) d subshellD) f subshellThe elem...

Solved • Jul 2, 2020

Periodic Table

Q. Part D. Classify the following elements as metal, nonmetal, or metalloid (semimetal).Zr, Li, N, Ar, Si, SbDrag the appropriate elements to their re...

Solved • Jul 1, 2020

Periodic Table

Q. Part C. Match each element to its period.H, F, Si, Ti, Cd, Ir, FrDrag the appropriate elements to their respective bins.The periodic table is the m...

Solved • Jul 1, 2020

Periodic Table

Q. Part B. Classify the following elements as halogens, alkali metals, alkaline earth metals, or noble gases.F, Br, Rb, Fr, Sr, XeDrag the appropriate...

Solved • Jul 1, 2020

Periodic Table

Q. Part A. Classify the following elements as main group elements, transition metals, or inner transition metals.P, Ga, Mg, Pt, Zn, CmDrag the appropr...

Solved • Jul 1, 2020

Periodic Table

Q. Part D.  Which of the following is not an element?A. waterB. lithiumC. sulfurD. leadThe periodic table is a list of elements arranged by atomic num...

Solved • Jul 1, 2020

Periodic Table

Q. Part C. Which of the following elements is not a metal?A. ironB. aluminumC. sodiumD. phosphorusThe periodic table is a list of elements arranged by...

Solved • Jul 1, 2020

Periodic Table

Q. Part B.  If a new element were discovered and it was found to form 1− ions, in which group would you place it in the periodic table? Enter the grou...

Solved • Jul 1, 2020

Periodic Table

Q. Part A. What is the atomic number of the element located in group 16, period 2 of the periodic table?Enter the atomic number.The periodic table is ...

Solved • Jul 1, 2020

Periodic Table

Q. Part B. What is the charge on the most stable ion of each of the following elements?Ba, N, O I, K, Al, Mg, SDrag each item to the appropriate bin. ...

Solved • Jul 1, 2020

Periodic Table

Q. How does a gas differ from a liquid with respect to each of the following propertiesability to conform to the shape of its container

Solved • Jun 30, 2020

Periodic Table

Q. How does a gas differ from a liquid with respect to each of the following propertiescompressibility

Solved • Jun 30, 2020

Periodic Table

Q. How does a gas differ from a liquid with respect to each of the following propertiesdensity

Solved • Jun 30, 2020

Periodic Table

Q. A biochemist who is studying the properties of certain sulfur (S)-containing compounds in the body, wonders whether trace amounts of another nonmet...

Solved • Jun 30, 2020

Periodic Table

Q. Which of the following is an incorrect representation for a neutral atom:a. 136Cb. 3015Pc. 6330Cud. 63Lie. 10847Ag

Solved • Jun 30, 2020

Periodic Table

Q. Which metal has the same charge in all of its compounds?a. Bab. Snc. Wd. Co

Solved • Jun 25, 2020

Periodic Table

Q. sp in the space-filling molecular models shown below represent? If you were to superimpose a nucleus on one of these spheres, how big would draw it...

Solved • Jun 25, 2020

Periodic Table

Q. Classify the substance represented by the molecular view shown here.The substance represented on the picture is composed of __________ molecules, w...

Solved • Jun 25, 2020

Periodic Table

Q. Which of the following elements are transition elements?a. Nib. Clc. Nad. Cd

Solved • Jun 25, 2020

Periodic Table

Q. Which metal is not required to have its charge specified in the names of ionic compounds it forms?a) Nab) Nic) Mod) Zre) Cr

Solved • Jun 16, 2020

Periodic Table

Q. Why is fluorine a gas, bromine a liquid, and iodine a solid, at room temperature?

Solved • Jun 16, 2020

Periodic Table

Q. Is sulfur a metal-metalloid or nonmetal what is it's a family name?

Solved • Jun 16, 2020

Periodic Table

Q. Which state of matter has atomic spacing that is close together and definite shape?

Solved • Jun 16, 2020

Periodic Table

Q. What is the atomic number of the element located in group 16, period 2 of the periodic table?

Solved • Jun 15, 2020

Periodic Table

Q. How many valence electrons are in silicon atom?

Solved • Jun 15, 2020

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. Which state of matter has atomic spacing that is close together and indefinite shape?

Solved • Apr 14, 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. Does the following diagram best describe a crystalline solid, a liquid, or a gas?

Solved • Nov 27, 2018

Periodic Table

Q. Liquid nitrogen boils at 77 K. The image shown below depicts a sample of liquid nitrogen.Which image best depics the nitrogen after it has boiled?

Solved • Nov 27, 2018

Periodic Table

Q. This molecular diagram shows a sample of liquid water.Which of the diagrams below best depicts the vapor emitted from a pot of boiling water?

Solved • Nov 27, 2018

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. Element A is an atomic element, and element B is a diatomic molecular element. Using circles to represent atoms of A and squares to represent atoms...

Solved • Oct 31, 2018

Periodic Table

Q. Classify each of the following elements as atomic or molecular.neon

Solved • Oct 31, 2018

Periodic Table

Q. Classify each of the following elements as atomic or molecular.fluorine

Solved • Oct 31, 2018

Periodic Table

Q. Classify each of the following elements as atomic or molecular.potassium

Solved • Oct 31, 2018

Periodic Table

Q. Classify each of the following elements as atomic or molecular.nitrogen

Solved • Oct 31, 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. Write its complete chemical symbol, including mass number, atomic number, and net charge (if any).

Solved • Oct 25, 2018

Periodic Table

Q. From the following list of elements —Ar, H, Ga, Al, Ca, Br, Ge, K,O— pick the one that best fits each description; use each element only once.(a) a...

Solved • Oct 25, 2018

Periodic Table

Q. The first atoms of seaborgium (Sg) were identified in 1974. The longest-lived isotope of Sg has a mass number of 266.Atoms of Sg are very unstable,...

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. 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. Using the periodic table, predict the charges of the ions of the following elements. Sr 

Solved • Oct 25, 2018

Periodic Table

Q. Using the periodic table, predict the charges of the ions of the following elements. As 

Solved • Oct 25, 2018

Periodic Table

Q. Using the periodic table, predict the charges of the ions of the following elements. Br 

Solved • Oct 25, 2018

Periodic Table

Q. Using the periodic table, predict the charges of the ions of the following elements. Ga 

Solved • Oct 25, 2018

Periodic Table

Q. Using the periodic table, predict the charges of the ions of the following elements. Se 

Solved • Oct 25, 2018

Periodic Table

Q. For each of the following elements, write its chemical symbol:chromium

Solved • Oct 25, 2018

Periodic Table

Q. For each of the following elements, write its chemical symbol:helium

Solved • Oct 25, 2018

Periodic Table

Q. For each of the following elements, write its chemical symbol:phosphorus

Solved • Oct 25, 2018

Periodic Table

Q. For each of the following elements, write its chemical symbol:zinc

Solved • Oct 25, 2018

Periodic Table

Q. For each of the following elements, write its chemical symbol:magnesium

Solved • Oct 25, 2018

Periodic Table

Q. For each of the following elements, write its chemical symbol:bromine

Solved • Oct 25, 2018

Periodic Table

Q. For each of the following elements, write its chemical symbol:arsenic

Solved • Oct 25, 2018