1.

The electronic configuration of an element 'X' is 2,8,8,2. Write its (i) group number, (ii) period number and (iii) the number of valence electrons in its atom. Justify your answer in each case.

Answer»

Solution :`X =2,8,8,2 RARR ` (i) GROUP number `=2^(nd)` , (ii) Period number =4 , (iii) VALENCE electrons =2


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