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Elements in Group IIA (also known as Group 2, or the alkaline earth metals) have similar properties because they all have the same number of ____

(multiple choice)

A. valence electrons
B. electrons
C. electrons needed to fill their octet
D. electron shells​


Sagot :

Answer:

Electrons in their outer shell

Explanation:

They have similar properties they have the same number of electrons in their outermost shell.

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