Unit #4 - Chemical Bonding

Which of the following atoms violates the octet rule?

• carbon (C)

• nitrogen (N)

• oxygen (O)

• fluorine (F)

• sulfur (S)

Covalent bonds form between __________.

Which of the following choices best explains why atoms tend to form bonds with other atoms?

• electrons must be transferred or shared

• atoms are more stable when bonding with other atoms

• forming a chemical bond increases the potential energy of atoms

• by forming bonds, atoms behave more like metalloids

• all atoms of elements in the periodic table need an octet of electrons

Which of the following would never be a central atom?

• carbon (C)

• boron (B)

• hydrogen (H)

• phosphorus (P)

• nitrogen (N)

How many pairs of electrons would you find in a double bond?

• one (1)

• two (2)

• three (3)

• four (4)

• five (5)

Forces of attraction that exist between atoms in a compound are known as __________ forces.

Which of the following is not an ionic compound?

• lithium chloride

• magnesium sulfate

• sodium bicarbonate

• sulfur tetrachloride

• silver nitrate

Which of the following intramolecular forces would be weakest?

• London-dispersion forces

• nonpolar covalent bonds

• dipole-dipole attractions

• hydrogen bonds

• ionic bonds

True or false? - Chemical compounds with lower boiling and melting points tend to have weaker attractive forces between individual units of the compound.

• True

• False

What type of bonds would you find in a triple bond?

• one (1) sigma, one (1) pi, and one (1) alpha bond

• three (3) sigma bonds

• two (2) sigma and one (1) pi bond

• three (3) pi bonds

• one (1) sigma and two (2) pi bonds