Question

An element has 5 electrons in the outermost M shell what is the valency of this element​

Answer 1

Answer:

valency = -3

Explanation:

if an element has 5 electrons in its outermost shell than the element should have to complete it's octate. it have to options it can lose 5 electrons or it can gain 3 electrons in losing 5 electrons more energy is required but in gaining 3 electrons less energy is required so it will gain 3 electrons as when an element gain electrons it gain negative charge so it's valency will be -3

Answer 2

Answer:

valency is the combining power of an element, especially as measured by the number of electrons it has to share, loss or gain in order to form an octet. Since the given elements has 5 electrons in its outer most shell, than to complete octet, it has to gain 3 electrons.

Hence the valency of the element is =3

Explanation:

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