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Question
An atom has electronic configurations 2, 8, 7.
To which of the following elements would it be chemically similar? (Atomic numbers are given in parentheses.)
Options
N(7)
F(9)
P(15)
Ar(18)
Solution
F(9)
Explanation:
It would be chemically similar to F(9) with configuration as 2, 7.
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