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

²³⁴U
⁶Li
³He
²H

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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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❓ Which atom has an incomplete sub-shell?
❓ What is the number of neutrons present in a ²³⁸U³⁺ ion?
❓ In which of the following electronic configurations are only two of the electrons unpaired?
❓ Which of the following is the symbol of a d-block element?
❓ Which of these elements has an average atomic mass of 55.85 amu?

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