Question

The decay of ${}_{92}^{238}U$to${}_{93}^{239}Np$by b-emission is not possible because-

• A. b-decay only occurs in isotopes of low mass
• B. ${}_{93}^{239}Np$is not a stable isotope
• C. Mass number cannot increase in a decay process
• D. Atomic number cannot increase in a decay process.

Answer 1

Answer: (C)

Mass number cannot increase in a decay process

Answer 2

In decay process mass no. do not increase