njesus4574 njesus4574

27-10-2021
Chemistry

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An atom of an unknown element can gain 3 electrons to reach a
full octet.
How many valence electrons does an atom of this element have?

An atom of an unknown element can gain 3 electrons to reach a full octet How many valence electrons does an atom of this element have class=

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wminu05 wminu05

02-11-2021

Answer:

5

Explanation:

If an atom can complete an octet (8 electrons) by gaining 3 electrons, then the no. of valence electrons in that atom is ; 8 - 3 = 5

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