chemical bonding (chap4) -olevel pure chem

what is a cation

positive ions that have a net positive charge

what are anions

negative ions that have a net negative charge

what are the chemical formulas of:

• hydrogen

• silver

• ammonia

• zinc

• methane

• H+

• Ag 2+

• NH3

• Zn 2+

• CH4

what is an ionic bond

the mutual electrostatic attraction between ions of opposite charges

what are the chemical formulas of:

• carbonate

• sulfate

• phosphate

• ammonium

• hydroxide

• nitrate

• CO3 2-

• SO4 2-

• PO4 3-

• NH4 +

• OH -

• NO3 -

what is valency

valency refers to the number of electrons that must be lost, gained, or shared in order for the atom to attain a noble gas electronic configuration