Question

A Radioactive subatance emits
A) alpha particles
B) beta particle
C) gamma particle
D) all of the three

Answer 1

hii your answer is d) all of the three


The three most common types of radioactive emissions are alpha particles, beta particles, and gamma rays. Fission also is a form of radioactive decay. ... Alpha decay emits an alpha particle, which consists of two protons and two neutrons. This is the same as a helium nucleus and often uses the same chemical symbol 4He2.

Answer 2

answer is (d)
radioactive substance emits alpha .beta and gamma rays