Question

what type of decay is pictured below?
o alpha decay
o gamma decay
o fission
o fusion

Explanation:

Step1: Identify decay type features

The image shows a uranium - 235 nucleus absorbing a neutron and then splitting into two smaller nuclei (barium - 141 and krypton - 92) along with the release of several neutrons and energy.

Step2: Recall decay type definitions

Fission is the process where a heavy nucleus splits into two or more smaller nuclei after being bombarded by a neutron. Alpha decay involves the emission of an alpha - particle (a helium nucleus). Gamma decay is the emission of gamma rays to release excess energy without changing the mass or atomic number of the nucleus significantly. Fusion is the combination of two light nuclei to form a heavier nucleus.

Answer:

Fission