Compared to a potassium atom, a potassium ion has A) a smaller radius B) a larger radius C) fewer protons D) more protons

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Alexzander Irwin

Chemistry

23 October, 15:50

Compared to a potassium atom, a potassium ion has A) a smaller radius B) a larger radius C) fewer protons D) more protons

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Vincent Wells · Answer 1

Potassium is a metal. So when it is ionized, it is to act as a cation, or a positively charged ion, K⁺. This means that potassium donates an electron when ionized. Thus, it would have lesser electrons and consequently, smaller radius. So, the answer is A.