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Comparing the pairs of elements listed below, choose the pair in which both atoms have nuclei with the same number of neutrons.
147N and 168O
73Li and 94 Be
2311Na and 2412Mg
3216S and 5425Mn

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taskmasters
Among the given choices:
147N and 168O 
73Li and 94 Be 
2311Na and 2412Mg 
3216S and 5425Mn

Only 2311Na and 2412Mg is the pair of elements wherein both atoms have nuclei with the same number of neutrons.