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  • An atom has 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 parentheses.) N(7) F(9) P(15) Ar(18)

Q.5.   An atom has 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 parentheses.)
               N(7)   F(9)   P(15)   Ar(18) 

Answers (1)

best_answer

The electronic configuration: (2,8,7) is of Chlorine.

(a) The atomic number of this element will be: 2+8+7 = 17.

(b) It will be chemically similar to the element Fluorine (9) as it also has the same number of valence electrons in its valence shell.

Posted by

Divya Prakash Singh

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