Plz tell me atomic number and valencies of first 30 elements. ????????

1.	Plz tell me atomic number and valencies of first 30 elements. ?????????????
Answer» Pg.no.86 of ncert you will get atomic number and you can calculate valency don\'t try to learn The valency of an atom is equal to the number of electrons in the outer shell if that number is four or less. Otherwise, the valency is equal to eight minus the number of electrons in the outer shell. Once you know the number of electrons, you can easily calculate the valency.

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