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Which of the not similar characteristic ...

Which of the not similar characteristic (s) about the electronic configuration of Be, Mg, Ca?

A

All the atoms have a pair of s-electrons in their outermost energy level

B

All the atoms contains a pair of p-electrons in their outermost energy level

C

All are alkaline earth metals

D

All are of second group of the periodic table

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The correct Answer is:
B
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