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Periodic Classification Of Elements
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09/09/2021 2:32 pm
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An atom has electronic configurations 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)
1 Answer
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09/09/2021 2:33 pm
(a) The atomic number of the element is 17 (2 + 8 + 7 = 17).
(b) It would be chemically similar to fluorine (F) which has also 7 electrons in its valence shell (2, 7).