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The number of protons, neutrons, and electrons in \mathrm{_{71}^{175}Lu} respectively are:

Option: 1

175, 104, and 71


Option: 2

71, 104 and 71


Option: 3

104, 71 and 71

 


Option: 4

71, 71 and 104


Answers (1)

best_answer

The atomic number is equal to the number of protons or electrons. Thus, the number of protons and electrons are 71. Now, the atomic mass = number of protons + number of neutrons.
Thus, number of neutrons = 175 - 71 = 104

Therefore, Option(2) is correct.

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Pankaj

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