Class 11ChemistryClassification of Elements and Periodicity in PropertiesExtended or long form of periodic table
EasyWhich are the starting elements in periods $1$ to $7$?
(N/A) The starting elements of each period in the periodic table correspond to the alkali metals (except for period $1$,which starts with Hydrogen). The elements are as follows:
| Period | Starting Element |
|---|---|
| $1$ | $H$ |
| $2$ | $Li$ |
| $3$ | $Na$ |
| $4$ | $K$ |
| $5$ | $Rb$ |
| $6$ | $Cs$ |
| $7$ | $Fr$ |
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