In radioactive decay_{90}^{234} Th \overset{}{\rightarrow}_{92}^{234} U the number of 𝝰 and β particles emitted respectively are -

Foundation

Chemistry Foundation

Nuclear Chemistry

Question

In radioactive decay $_{90}^{234} Th {\overset{}{\to}}_{92}^{234} U$ the number of 𝝰 and β particles emitted respectively are -

1, 2

0, 2

2, 0

2, 1

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Change in mass number = 234 – 234 = 0
Emission of α particle decreases the mass by
4 units.
Number of α - particles emitted = 0
Increase in atomic number = 92 – 90= 2
Emission of β-particle increases atomic number by 1 unit.
Number of β-particles emitted = $\frac{2}{1}$ = 2