Briefly explain the account explain the account of groups and periods in long from of periodic table .

Briefly explain the account explain the account of groups and periods

1.	Briefly explain the account explain the account of groups and periods in long from of periodic table .
Answer» Solution :Groups: VERTICAL COLUMNS from 1 to 18 groups Groups : 1 `rarr` Alkali net as Groups : 2 `rarr` Alkaline earth metals Groups :3 to 12 `rarr` Transition elements (d - block elements) Groups : 13 `rarr`Boron family, Groups : 14 `rarr` Carbon family Groups : 15 `rarr` Nitrogen family , family , Groups : 16 `rarr` Oxygen family Groups : 17 `rarr` Halogens , Group : 18 `rarr` Noble gass. Periods : Horizontal rows from 1 to 7 are PERUSES first period (IS) very short period, H and He is preset Seconds period (2s,2p) `rarr` Short period, Li to Ne is present. Third period (3s,3p) `rarr` short period , Na to Ar is present. Fourth period(4s,3d,4p) `rarr` Long period , K to Krr is present. Fifth period (5s,4f,5d,6p) `rarr` Long period RB to Xe present. Sixth period (6s, 4f,5d,4p) `rarr` Very Long period , Lanthanides are present Seventh period (7s,5f,6d) `rarr` Actinides are present . Here both sixth and seventh period are CALLED inner transition elements.