Nuclei Ques 96
96. The mass of $\alpha$-particle is
[1992]
(a) less than the sum of masses of two protons and two neutrons
(b) equal to mass of four protons
(c) equal to mass of four neutrons
(d) equal to sum of masses of two protons and two neutron
Show Answer
Answer:
Correct Answer: 96.(a)
Solution:
- (a) $\alpha$-particle $= _2 He^{4}$. It contains $2 p$ and $2 n$. As some mass is converted into B.E., therefore, mass of $\alpha$ particle is slightly less than the sum of the masses of $2 p$ and $2 n$.
BETA
