Kimberly Schroeder

Chemistry

12 July, 17:58

How does one determine the number of core electrons an atom has?

O

A. Subtract the atomic number from the atomic mass.

O

B. Subtract the group number from the atomic number.

O

C. Add the atomic number and the number of valence electrons.

O

D. Add the group number and the period number.

+3

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