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Physics

27 September, 07:43

For the A groups (Groups 1A to 8A), how does the group number relate to the electron arrangement in atoms of the group?

A. The group number is equal to the number of electrons in the element.

B. The group number is equal to the block number of the sublevel.

C. The group number is equal to the charge on the ions.

D. The group number is equal to the number of valence electrons.