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Question

the outer electronic configuration of some elements are:
a) 3s2 3p4
b) 3d10 4s2
c) 3s2 3p6 4s2
d) 6s2 4f3
to which block of elements in the periodic table do each of these elements belong?

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Solution

Dear student,

The given configuration is 3s23p64s2. As the last electron enters the s orbital its a s block element.It belongs to the s block II A group. That is it belongs to the alkaline earth metal.As well as it belongs to the 4th period of the table. The element is Calcium.
Regards,

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