Question

which element will form only covalent compound? ​

Answer 1

SILICON form only covalent compound.

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Answer 2

Element E - Silicon forms only covalent compounds. (ii) Aluminium is a metal with the valency 3. (iii) Nitrogen is a nonmetal with the valency 3. (iv) Out of D (Aluminium) and E (Silicon), aluminium has a larger size than silicon.