8. Based on the formula, predict whether each of the following compounds is primarily ionic or primarily covalent. a. sodium iodide (NaI) d. ammonia (NH3) b. methane (CH4) e. glucose (C6H12O6) c. calcium chloride (CaCl2)

primarily ionic include = sodium iodide (NaI), calcium chloride (CaCl2)

primarily covalent include - Ammonia (NH3), Methane (CH4) and

Glucose (C6H12O6)

Explanation

ionic bond is formed when there is complete transfer of electron between atoms. It occur between metal which donate electrons and a non metal which accept electrons.

for example in formation of CaCl2, ca donate 2 electron to 2 Cl atom, while 2 Cl atom accept the 2 electrons to form ionic bond.

Covalent bond is formed when two or more non metal form bond by sharing electrons pairs.

For example in NH3 3 pairs of electron are shared. to form covalent bond.