NAME THE LARGEST ATOM AMONG THE ALKALIE METAL

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Solution

Dear Student,
As we move down the group, size of an atom increases due to increase in number of shells. Therefore, largest non-radioactive alkali metal is Caesium(Cs). If we consider radioactive elements too, then Francium (Fr) will be the largest alkali metal.
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Among alkali metals __ has the smallest atomic radius.

L i^{+} (a q .)

L i^{+} (a q .)

	Column $I$		Column $I I$
$P$	$11$	$1$	IE is maximum among the given elements
$Q$	$19$	$2$	Alkali metal
$R$	$37$	$3$	Largest size among the given elements
$S$	$55$	$4$	Position next to $K r$

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