Q.

The number of protons, neutrons and electrons in Lu 71175 , respectively, are:

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a

104, 71 and 71

b

71, 71 and 104

c

175, 104 and 71

d

71, 104 and 71

answer is D.

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Detailed Solution

Lu 71175  or  XZASince atomic number(Z) is 71, number of protons = 71, electrons = 71 ; Neutrons = 175(A) - 71(Z) = 104
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The number of protons, neutrons and electrons in Lu 71175 , respectively, are: