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Compared to a potassium atom, a potassium ion has

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: If we find potassium (K) on the Periodic Table, we will see a charge of +1. This means when potassium atom becomes an ion, it loses one electron. Losing an electron means the radius gets smaller.

Answer: 1


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