Question

What is the valency of element X in the compound NaX?​

Answer 1

Answer:

ANSWER

An atom of an element (X) has its K, L and M shells filled with some electrons. It reacts with sodium metal to from a compound NaX. The number of electrons in the M shell of the atom (X) will be Seven.

In NaX, Na forms Na

+

and X forms negtive ions. Thus, X gains one electron to form uni negative ion in which octet will be completed. Hence, X has 7 valence electrons

Hence, the option (B) is correct answer.

Explanation:

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Answer 2

Answer:

the answer is

Explanation:

X na x the main

min the time

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