Question

22 An element X has a valency 1.
.
(i) Is element X a metal or a non-metal?​

Answer 1

Answer:

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Explanation:

Element X has a valency of 1. It either belongs to group 1 or 17.

(i) Phosphide ion is and element X is .

Symbol : X P

Valency : +1 -3

Cross multiply the symbol with valency. So, the formula of its phosphide will be .

(ii) Chloride ion is and element X is .

Symbol : X Cl

Valency : +1 -1

Cross multiply the symbol with valency. So, the formula of its chloride will be .

(iii) Since, element X is forming compounds with non metals and in state. It is a metal.

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