Question

Formula of hydride of a halogen in period 3 _________.

Answer 1

Hydride

In simple words, hydrides are binary compounds formed between hydrogen and another element ( electronegative or electropositive).

Halogen

1. Halogens are group 17 elements with valency 1.
2. They are highly electronegative.
3. H⁺ ions combine with halogens to form the corresponding hydride.
4. The element in group 17 and period 3 is Chlorine (Cl).
5. They form Cl^- ions and combine with H⁺ ions to form HCl.

Final answer: The formula of hydride of a halogen in period 3 is HCl