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08/10/2021 7:21 pm
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An atom has an electron structure of 2, 7.
(a) What is the atomic number of this atom?
(b) To which of the following would it be chemically similar?
7N, 15P, 17Cl, is Ar
(c) Why would you expect it to be similar?
1 Answer
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08/10/2021 7:22 pm
(a) 9.
(b) 17 Cl.
(c) Both have the same number of valence electrons (7 electrons each) in their atoms.