Nuclear Physics And Radioactivity Question 356
Question: A radioactive nucleus with Z protons and N neutrons emits an a-particle, 2b-particles and 2 gamma rays. The number of protons and neutrons in the nucleus left after the decay respectively, are [AMU (Engg.) 2001]
Options:
A) Z ? 3, N ? 1
B) Z ? 2, N ? 2
C) Z ? 1, N ? 3
D) Z, N ? 4
Show Answer
Answer:
Correct Answer: D
Solution:
With emission of an $ \alpha $ particle $ {(_{2}}He^{4}) $ mass number decreases by 4 unit and atomic number decrease by 2 units and with emission of $ 2{{\beta }^{-1}} $ particle atomic number increases by 2 units. So Z will remain same and N will become $ N-4. $
BETA
