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An atom has the electronic configuration...

An atom has the electronic configuration 2, 8, 7.
a] What is the atomic number of this element? b] To which of the following elements would it be chemically similar? (Atomic numbers are given in parenthesis) N (7), F (9), P (15), Ar (18)

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It would be chemically similar of F(9) with configuration as 2,7
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SUBHASH PUBLICATION-PERIODIC CLASSIFICATION OF ELEMENTS-TEXTBOOK EXERCISE QUESTION
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  4. Which elements has The electronic configuration 2,8,2 ?

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  15. The position of three elements A, B and C in the periodic Table is sho...

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