Question

a student states that non - metal atoms share their core electrons when they form covalent bonds. what is wrong with this statement?
a. atoms do not share electrons during covalent bonding.
b. atoms share their valence electrons, not their core electrons.
c. non - metal atoms do not form covalent bonds.
d. atoms share core electrons when they form ionic bonds.

Explanation:

• Option A: Atoms do share electrons during covalent bonding. Covalent bonds are formed by the sharing of electrons between non - metal atoms. So, the statement in option A is wrong.
• Option B: Atoms share their valence electrons (not core electrons) when forming covalent bonds. This statement is correct.
• Option C: Non - metal atoms form covalent bonds. This statement is correct.
• Option D: Atoms share core electrons when they form ionic bonds (in ionic bonds, electrons are transferred, but the description about core electrons is wrong as in ionic bonds, valence electrons are involved in transfer). But the main wrong statement is in option A regarding covalent bonding.

Answer:

A. Atoms do not share electrons during covalent bonding.