73 The following table gives numbers of electrons,
protons, and neutrons in atoms or ions of a num-
ber of elements. Answer the following: (a) Which
of the species are neutral? (b) Which are nega-
tively charged? (c) Which are positively charged?
(d) What are the conventional symbols for all the
species?
Answers: 3
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73 The following table gives numbers of electrons,
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