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An atom has a total of 3 electrons. There are 2 electrons in the first level and 1 electron in the second level. How many VALENCE electrons does it have?
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An atom has a total of 3 electrons. There are 2 electrons in the first level and 1 electron in the second level. How many VALENCE electrons does it have?

User RickF
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5 votes

Answer:

It has one valence electron.

Step-by-step explanation:

number of electrons in the last shell is number of valence electrons.

User Trapper
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