Atoms And Nuclei Question 172

Question: In helium nucleus, there are [RPET 1997]

Options:

A) 2 protons and 2 electrons

B) 2 neutrons, 2 protons and 2 electrons

C) 2 protons and 2 neutrons

D) 2 positrons and 2 protons

Show Answer

Answer:

Correct Answer: C

Solution:

Helium nucleus R $ _{2}He^{4} $ . Number of protons = Z = 2 Number of Neutrons = A - Z = 2.



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