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Compared to a potassium atom, a potassium ion has(1) a smaller radius (2) a larger radius(3) fewe

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.

Answer:1


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