June 2017 NY Regents Chemistry Exam
13 Compared to a potassium atom, a potassium ion has (1) a smaller radius
(2) a larger radius (3) fewer protons
(4) more protons
Solution: Potassium (K) can be found on the Periodic Table. Its' oxidation number is shown as well and is +1, which means it loses one electron. When it loses an electron, its radius becomes smaller.
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