Question

(a) What do you mean by valency ?

(b) How do we calculate the valency of an element from its electronic configuration ?​

Answer 1

Answer:

• Valency is the combining power of an element. Elements in the same group of the periodic table have the same valency. The valency of an element is related to how many electrons are in the outer shell
• An element's valency is determined by the number of electrons in its outer shell. Hence, the number of valence electrons obtained from the electronic configuration of the element gives the valency i.e. the number of electrons lost, gained or shared by the element to attain the noble gas configuration

Explanation:

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Answer 2

Explanation:

VALENCY

• Valency is the combining power of an element.

• Elements in the same group of the periodic table have the same valency.

• The valency of an element is related to how many electrons are in the outer shell...

HOW TO CALCULATE VALENCY....

• An element's valency is determined by the number of electrons in its outer shell.

• Hence, the number of valence electrons obtained from the electronic configuration of the element gives the valency i.e.

• The number of electrons lost, gained or shared by the element to attain the noble gas configuration