Chemical Bonding Practice Quiz

How do you use the periodic table to determine the number of valence electrons in an atom of an element?

• read the period number

• for groups 1 and 2 it is the group number, for groups 13, 14, 15, etc., it is 3, 4, 5, etc.

• read the electronegativity number

• it is the group number exactly

How many valence electrons are in an atom of aluminum?

• 13

• 3

• 4

• 5

What is the name given to the electrons of an atom, which are available for chemical bonding?

• orbital electrons

• valence electrons

• anions

• cations

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How do metals obey the octet rule when reacting to form compounds?

• they gain electrons

• they lose all of their valence electrons

• they lose some of their valence electrons

• they share electrons

How do nonmetals obey the octet rule when reacting to form compounds?

• they gain electrons

• they lose electrons

• they share electrons

• nonmetals do not obey the octet rule

What is the net overall charge on an ionic compound?

• 0

• 1+

• 2+

• 3+

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which of the following occurs in an ionic bond?

• valence electrons are shared

• Two atoms share two electrons.

• Oppositely charged ions attract.

• Like-charged ions attract.

In covalent bonds, the valence electrons

• are shared evenly between the atoms

• are shared, but attracted more to the element with the lower electronegativity

• transfer from the metal to the nonmetal

• are shared, but attracted to the element with the higher electronegativity

Which of the following occurs in a covalent bond?

• electrons are transfer

• electrostatic forces take over

• electrons are shared to always achieve an octet

• electrons are shared in order to achieve Nobel gas configuration

How many valence electrons are transferred from the nitrogen atom to potassium in the formation of the compound potassium nitride?

• none of the valence electrons are transferred

• 1

• 2

• 3