Question

Which of the following elements are chemically similar
i)N(7) ii) F(9) iii) P[15) v) Ar(18)
a) i) and ii)
b) i) and iii)
c) ii) and iii)
d) ii) and iv)
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Answer 1

Answer:

A. i and ii

N and P are chemically similar becoz both have valency 3.