ACS Chemistry Practice Exam 2026 – The All-in-One Guide to Exam Success!

Question: 1 / 400

What charge do β-particles have?

2+

1-

Beta particles are a type of subatomic particle that are produced during radioactive decay. Specifically, they are electrons ejected from the nucleus of an atom when a neutron decays into a proton. As electrons, beta particles carry a negative charge. This is fundamental to their identity and behavior in nuclear processes.

In the context of the choices provided, the charge of beta particles being represented as 1- accurately reflects their nature as negatively charged particles, differentiating them from alpha particles, which are positively charged, and other forms of radiation that might be uncharged. Thus, the identification of beta particles as negatively charged is consistent with their role in nuclear chemistry and radioactivity.

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Uncharged

Positive

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