Question

Which of the following forms of hydrogen emits low energy ${\beta }^{-}$ particles?

• A. Deuterium ${}_1^{2}H$
  
• B. Tritium ${}_1^{3}H$
  
• C. Protium ${}_1^{1}H$
  
• D. Proton $H^{+}$

Answer 1

Answer: (B)

For tritium $\left({}_1^{3}H\right)$

No. of neutron $(n)=2$

No. of proton $(p)=1$

$\frac{n}{p}=2$

$\because \frac{n}{p}$ is high

tritium wil emit $\beta$ particle.