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suter [353]
3 years ago
6

Which number indicates the energy level of an atom's valence electrons?

Chemistry
1 answer:
In-s [12.5K]3 years ago
3 0

Answer:

The group number

Explanation:

For the main group elements which are those in groups 1A, 2A, and 3A-8A (skipping the transition elements) the digit that goes with the group number is also the number of valence electrons. (Group 1A elements have one valence electron, Group 2A have 2, and so on.)

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