Question

An atom undergoes nuclear decay, but its atomic number is not changed.

What type of nuclear decay did the atom undergo?
A. Gamma decay
B. Beta decay
C. Nuclear fission
D. Alpha decay

Answer 1

A. Gamma decay

Step-by-step explanation:

A form of nuclear decay in which the atomic number is unchanged is a gamma decay.

The atom has undergone a gamma decay.

In a gamma decay, no changes occur to the mass and atomic number of the substance.

• Gamma rays have zero atomic and mass numbers.
• When they cause decay, they cause no change to the mass and atomic numbers.
• They simply produce gamma rays during such reactions and these rays are very energetic.