Answer:
1. By accepting electron(s) from a metallic atom to form ionic bond.
2. By sharing electron(s) with non metal to form covalent bond.
Step-by-step explanation:
Non metal form bonds by:
1. Accept electron(s) from a metallic atom to form ionic bond. Ionic bond is formed when there is a transfer of electron(s) from the metallic atom to the non-metallic atom. This can be seen when sodium react with chlorine to form sodium chloride as shown below:
a. Sodium (Na) lose it's valence electron to form sodium ion (Na+) as shown below:
Na —> Na+ + e-
b. Chlorine (Cl) accept the electron to form the chloride ion (Cl-) as shown below:
Cl + e- —> Cl-
Combining both equation, we have:
Na + Cl + e- —> Na+ + Cl- + e-
Cancel out the electron
Na + Cl —> Na+Cl-
Now we can see that the non metal i.e Cl accept electron from the metal i.e Na to form ionic bond.
2. By sharing electron(s) with a non metal to form covalent bond. Covalent bond is formed when there is a sharing of electron(s) between the two atoms involved. This can be seen when hydrogen atom combine with another hydrogen atom to form hydrogen molecule as shown below:
H + H —> H2