An atom in which the number of protons is greater than the number of neutrons is

²³⁴U
⁶Li
³He
²H

📝 Detailed explanation

⁶Li has 3 protons and 3 neutrons. ³He has 2 protons and 1 neutron, so the correct answer should be ³He if the question is interpreted strictly. The provided answer key indicates B.

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