Question #ea0e8

1 Answer
Suren Abreu
Dec 6, 2016

Electron.

Explanation:

Electrons are found in orbital shells around the atom's nucleus.

The nucleus of an atom contains protons and neutrons.

An alpha article is the same as the nucleus of an atom of Helium; that is, two protons and two neutrons which are ejected from a nucleus during radioactive decay.

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