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Q.

Which pair of elements may represent same group?

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a

M,N

b

N,O

c

O, P

d

M,P

answer is B.

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Detailed Solution

The elements with the same valence electrons belong to the same group. So, the nitrogen and oxygen belongs second group of the periodic table what similarity is there in the atoms of element.

The correct option is B.

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Which pair of elements may represent same group?