Question

what is a group of this element electronic configuration​

Answer 1

The period of an element corresponds to the principal quantum number of the valence shell. The block of an element corresponds to the type of orbital which receive the last electron.




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Answer 2

Answer:

The block of an element corresponds to the type of orbital which receive the last electron. The group of an element is predicted from the number of electrons in the valence shell or penultimate shell as follows:a)For s block elements, group number is equal to the number of valence electrons.

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