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Standard XI
Chemistry
Atomic Number and Mass Number
Question
The number of protons, neutrons and electrons in $$^{175}_{71}Lu$$, respectively, are
A
$$104, 71$$ and $$71$$
B
$$71, 104$$ and $$71$$
C
$$71, 71$$ and $$104$$
D
$$ 175, 104$$ and $$71$$
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Solution
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Correct option is D. $$71, 104$$ and $$71$$
$$^{175}_{71}Lu$$
$$n_p= n_e=71$$
$$n_p +n_n =175$$
$$n_n=175-71=104$$
Option D is correct.
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