Chemistry Unit 6

Which of the following elements does not have similar properties to the others?

• Na

• P

• K

• Li

A bond that is principally ionic will form between

• sulfur and hydrogen.

• phosphorus and sulfur.

• chlorine and iodine.

• potassium and oxygen.

In a Lewis structure, which of the following are indicated by a solid line (bonding pair)?

• All of the electrons

• All of the valence electrons

• Electrons being shared

• Electrons that are not shared

The molecular shape shown in the following figure is

• tetrahedral

• trigonal pyramidal.

• bent

• trigonal planar

In covalent compounds, how many electrons are represented by a double bond?

• 2

• 4

• 6

• 8

A bond between hydrogen and sulfur would be classified as:

• polar covalent

• nonpolar covalent

• ionic

• none

Which of the following statements is true for most atoms?

• In general, as the atomic radius increases, the ionization energy increases.

• In general, as the atomic radius increases, the ionization energy decreases.

• In general, as the ionization energy decreases, the electronegativity increases.

• No correct answer is given.

Ionization energy tends to be lower for metals than for nonmetals because

• it is easier for metals to lose electrons than gain electron to have a complete octet

• it is easier for metals to gain electron than lose electrons to have a complete octet

• It is easier for nonmetals to lose electrons than to gain them to have a complete octet

• none of the above

Atoms of the metallic elements generally form ions by

• gaining electrons, forming positive ions.

• gaining electrons, forming negative ions.

• losing electrons, forming positive ions.

• losing electrons, forming negative ions.

Which of the following elements is a halogen?

• H

• O

• F

• Ne