Question

how to find the volency of an element
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Answer 1

Answer:

if an atom has 1,2,3 and 4 electrons in its outermost shell,

then , its valency is 1,2,3 an 4 respectively.

if an atom has 5,6,7,8 electrons in its outermost shell ,

then, its valency is 8  -5 = 3 , 8 - 6 = 2 ,8 - 7 = 1 and 8 - 8 = 0.

Example,

Valency of hydrogen = 1 .

Valency of oxygen = 2.

Valency of lithium = 1.

Explanation: