Match the elements to form ionic compounds. please help

Cl
Na
Mg
O

Be
S
Li
F

1 answer

Elements on the left hand side of the periodic table combine with elements on the right had side of the table to form ionic compounds. Examples are Li and
Br, Ca and Cl,etc. Elements in the middle of the table combine with elements on either side to form covalent compounds For example, CCl4 and CH4. Also, elements on the same side of the table (SO2, PCl3 etc) are covalent.