Question

Which should be larger, the potassium atom, K, or the potassium ion, K⁺?
A) The potassium ion, K⁺ is larger since charging an atom always makes it larger.
B) The potassium atom, K, with an additional shell of electrons is larger.
C) The potassium ion, K⁺ is larger since it has an extra electron which increases its size.
D) The potassium atom and the potassium ion are exactly the same size and only differ in charge.

Answer

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