Question

If it is assumed that ${}_{\mathrm{\infty }}^{235}U$ decays only by emitting a and $\beta$ particles, the possible product of the decay is:

• (A) $${}_{89}^{225}AC$$
• (B) $${}_{89}^{227}Ac$$
• (C) $${}_{89}^{230}Ac$$
• (D) $${}_{89}^{231}AC$$

Answer 1

The Correct Option is B

Explanation:
New mass no. = 235 – 2 × 4 = 227New at. no. = 92 – 2 × 2 + 1 = 92 – 4 + 1 = 89