Chemistry, asked by manjumishra844727, 14 hours ago

The valency can be calculated by the formula ....

1) 18 - mass number = valency .

217 - mass number = valency .

3) 18 - group number = valency .

4) 18 - Atomic number = valency .

Answers

Answered by adarshreddy01456

0

Answer:

18

Explanation:

because the.madd __ valancy

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