Question

Which emission causes the atomic number of a nuclide to decrease by 2 and its mass number to
decrease by 4?
1.
an alpha particle
2.
a beta particle
3.
gamma radiation
4.
a positron

Answer 1

An alpha particle emission causes the atomic number of a nuclide to decrease by 2 and its mass number to decrease by 4.

What is nuclear emission?

Nuclear Emission explains the release of energy stored in the nucleus of an atom in the form of particles like alpha particles, beta particles, gamma ray etc.

When a nucleus emits an alpha particle, it loses 2 protons and 2 neutrons, so its atomic number decreases by 2 and its mass number decreases by 4.

Hence, option 1 is correct.

Learn more about alpha particles here:

https://brainly.com/question/487383?referrer=searchResults

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