Question

How will you find the valency of chlorine, sulphur and magnesium? *

-1,-2 and +2

-2,-3, and +5

-1,-3 and +4

None of these
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Answer 1

Answer:

It's common knowledge,

1)Chlorine: Belongs in group 17, valency in group 17 is -1.

2) Sulphur: Belongs to group 16, valency in group 16 is -2.

3) Magnesium: Belongs to group 2, valency in group 2 is +2.

So answer is A) -1,-2,+2