Chemistry Quiz: Bonds, Ionic Compounds, and Lewis Structures, Exercises of Chemistry

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Chapter 3:

1. what type of bond are electrons

shared between two atoms?

a. ionic b. charged c. covalent d. coordinate

2. What determines the number

of electrons an atom will gain or

lose when forming an ion?

a. The number of electrons in the valence shell of the atom

b. The octet rule

c. Both a and b

d. Neither a nor b

4. Which of the following is the

correct name of Mg 3 N 2?

a. magnesium nitrogen

b. magnesium nitride

c. magnesium (II) nitride

d. trimagnesium dinitride

5. Which of the following is true

for N 2 O 5?

a. It’s name is dinitrogen pentoxide. b. It’s an example of an ionic compound. c. The charge on the nitrogen is +2 and the charge on the oxygen is −5. d. It has a net charge of +7.

7. Which of the following atomic

properties determines whether a

bond between two atoms is polar

or nonpolar?

a. electronegativity difference between the atoms b. bond order c. number of bonds (single, double, or triple) d. the number of metals present in the bond

8. According to VSEPR theory,

what determines the 3-D shape of a

molecule?

a. the molecular charge b. the total number of bonds in the molecule c. the total nuclei in the molecule d. the repulsions of the valence-electron pairs surrounding the central atom