Chemistry Chapter 8

Which of these has a double bond?

• Cl₂
• H₂
• N₂
• O₂

How many lone pairs (unshared pairs) of electrons are on the central atom in ammonia (NH₃)?

• 0

• 1

• 2

• 3

VSEPR stands for ________ theory.

• Valence Structure of Electron Pyramids and Regression
• Varied Structures of Electrons Paired and Replaced
• Varied Shell Energy of Protons and Radiation
• Valence Shell Electron Pair Repulsion

What two types of atoms make a covalent bond?

• 2 Nonmetals
• 1 Nonmetal and 1 Metal
• 2 Metals
• 2 Noble Gases

How are covalent bonds explained?

• When one atom takes the other atom's electron
• When the atom shares an electron with an another atom
• When the two nuclei merge
• When the neutrons leave the nucleus

How many electrons are shared in a triple bond?

• 6
• 3
• 6 pairs
• 5

Which of the following is a covalent bond?

• NaCl
• HCl
• NH₄Cl
• ZnCl₂

How many valence electrons are in phosphorus?

• 15
• 4
• 5
• 31

What kind of bond occurs between the carbon atoms in C₂H₂?

• single
• double
• triple
• quadruple

Draw the Lewis structure for OF₂ and determine the number of lone pairs on the central atom.

• none
• 1
• 2
• it's ionic