Question

what is valency? if z = 4 what is the valency of the element.​

Answer 1

Answer:

If z = 4 it means the atomic number of that element is 4 and therefore there are 4 no. of electrons present in the atom of that element. The element with atomic no. 4 is beryllium and the valency of beryllium is 2 due to the presence of 2 valence electrons.

Answer 2

Answer:

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Explanation:

valency:the combining power of an element is called an element..

By z=4,we mean that the atomic number(z) of element is 4.Its electronic configuration is 2,2.Hence, the valency of this electron is 2 since the outermost shell has only two electron. Therefore, the element with z= 4 is Beryllium(Be)..