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Question 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)

Question 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)

Grade:12th pass

1 Answers

Pawan Prajapati
askIITians Faculty 6228 Points
2 months ago
(a) The atomic number of the given element is 2 + 8 + 7(= 17). (b) It would be chemically similar to fluorine [F(9)] because its electronic configuration is 2, 7.

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