Question

The electrons in the last shell or energy level of an atom are __________

1. Valence electrons
2. Vacant orbital
3. None of the above
4. Auger electrons
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Answer 1

valence electrons

explanation:

Electrons in the outermost energy level of an atom have a special significance. These electrons are called valence electrons, and they determine many of the properties of an atom. An atom is most stable if its outermost energy level contains as many electrons as it can hold.