Question

full form of VSEC in chem
grouping of elements based on electronic configuration​

Answer 1

▪The group of an element is predicted from the number of electrons in the valence shell or/and penultimate shell as follows: a)For s block elements ,group number is equal to the number of valence electrons. b) For p block elements ,group number is equal to 10+number of electrons in the valence shell.....

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