Question

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

Answer 1

Answer:

A. Gamma decay

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.