6.2/6.5 Review

Atoms in chemical bonds have lower _________ than the same atoms outside their bonds

• potential energy
• kinetic energy
• gravitational energy
• thermal energy

An ion composed of covalently bonded atoms that still possess a charge is a(n)

• cation
• anion
• isomer
• polyatomic ion

Which shape will a molecule of SiCl4, silicon tetrachloride take?

• tetrahedral
• octahedral
• trigonal bipyramidal
• trigonal pyramidal

An unshared electron pair is

• found near the nucleus
• represented by one dot
• a lone pair
• bonded to only hydrogen

What is the name of the following polyatomic ion: CO₃^2-

• chromate
• carbonate
• chlorate
• carbonide

What happens to the potential energy when atoms get too close to each other?

• Potential energy decreases
• Potential energy increases
• Potential energy stays the same
• Potential energy becomes negative

The average distance between two bonded atoms is called the

• Bond radius
• Bond length
• Bond diameter
• Bond width

What types of bonds are the strongest?

• Long & single
• Long & multiple
• Short & single
• Short & multiple

What electrons are involved in writing electron dot notations?

• Inner shell electrons
• Valence electrons

Given a molecular formula that does not contain carbon, which atom do we choose to place in the center of a Lewis structure?

• Most electronegative
• Least electronegative
• Most negative
• Most positive