Question

The number of protons, neutrons and electrons in \({ }_{71}^{175} L u\), respectively, are :
A 71,104 and 71
B 104,71 and 71
C. 71,71 and 104
D 175,104 and 71

Answer 1

Solution:
\({ }^{175} \mathrm{Lu}_{71}\) Number of electrons
\(=\) Number of protons \(=71\)
Number of neutrons \(=175-71=104\)

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