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8 solutions

Periodic Trends

Q. How does radii of atoms/ions, ionization energy and electron affinity change with principle quantum number change and effective nuclear charge change?

Solved • Nov 17, 2019

Periodic Trends

Q. 7. Which of the following statements are true? I) more metallic elements form more acidic oxides II) elements with large electron affinities are strong reducing agents III) elements with similar electronegativities form covalent compounds (A) Only I (B) Only II (C) Only III (D) I and II (E) II and III

Solved • Oct 21, 2019

Periodic Trends

Q. Rank the elements aluminum, gallium, and boron in order of decreasing conductivity.

Solved • Oct 18, 2019

Periodic Trends

Q. Arrange the following metals in increasing order of expected melting point: Cr, Ti, Sc, V.

Solved • Oct 18, 2019

Periodic Trends

Q. As an atom’s radius decreases… a. its ionization energy will either increase or decrease depending on whether you are going up a column or across a row. b. its ionization energy increases. c. its ionization energy does not change. d. its ionization energy decreases.

Solved • Oct 14, 2019

Periodic Trends

Q. Place the following in order of decreasing electronegativity Mg CI F

Solved • Apr 22, 2019

Periodic Trends

Q. The elements with atomic # 31 & 49 have similar chemical properties. Based on electronic configurations, predict the atomic number of a heavier element that also should share these chemical properties

Solved • Apr 1, 2019