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What property of an element does the group number identify in a numbering
system that uses "A" and "B"?
A. The number of core electrons
B. The number of inner electrons
C. The number of valence electrons
D. The electrons closest to the nucleus

Respuesta :

ekamunya04

Answer:

C) the number of valence electrons

Explanation:

the group shows the valence electrons in the atom

eg. Na has one valence electron hence it belongs to group(I)

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