Question

choose the item in column two that best matches each item in column one.
column a

1. a bond in which electrons are completely lost or gained by the atoms involved.
2. a bond in which the electrons are shared unequally.
3. a type of bond important in holding different parts of the same molecule together into three - dimensional structure.

column b
a. polar covalent bond
b. nonpolar covalent bond
c. hydrogen bond
d. double bond
e. ionic bond

Explanation:

1. In an ionic bond, one atom completely loses electrons and another gains them.
2. In a polar - covalent bond, electrons are shared unequally between atoms due to differences in electronegativity.
3. Hydrogen bonds are important in maintaining the three - dimensional structure of a molecule by holding different parts of the same molecule together.

Answer:

1. e. Ionic bond
2. a. Polar covalent bond
3. c. Hydrogen bond