Question

the formula of the oxide of an element (A) is A2O3. The formula of the cloride of the element will be
(a) A2CL3
(b) ACL3
(c) A2CL2
(d) ACL​

Answer 1

valency of element would be +3 and formula of hydride would be A2H6

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Answer 2

Answer:

Explanation:

The formula of the oxide of an element (A) is A2O3. The formula of the cloride of the element will be ACL3. Hence the correct answer is option B among the given options.

The Atomic number of chlorine is 17 and the electronic configuration of chlorine is 2,8,7. As it has seven valence electrons in the outermost shell of it, chlorine needs 1 electron for completing it's octet. Therefore, the valency of chlorine is 1.