Question

what will be the group number of element A having three electrons in its outermost shell??
most of the answers I received is 'boron' ...why 'scandium' is not the answer???​

Answer 1

Answer:

Group 13 (III) (boron group): 3 valence electrons. Valence electrons can be defined as the electrons that are located in the outermost electron shell of an element. The atom will have one or more electron shells based on how many electrons the atom has.

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Answer 2

group 13 elements have 3 valance electron in outermost cell boron also have 3 valance electron in outermost cell