Nuclear Chemistry Ques 7
7. Emission of an alpha particle leads to a
[1989]
(a) Decrease of $2$ units in the charge of the atom
(b) Increase of $2$ units in the mass of the atom
(c) Decrease of $2$ units in the mass of the atom
(d) Increase of $4$ units in the mass of the atom.
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Answer:
Correct Answer: 7.(a)
Solution:
- (a) Emission of $\alpha$-particle $( _2^{4} He)$ leads to decrease of $2$ units of charge. e.g.
$ _{92} U^{238} \longrightarrow _{90} Th^{234}+ _2 He^{4} $
BETA
