Question

Which of the following is correct order of atomic size ?
(a) Li < Na < K < Rb < Cs (b) Li > Na > K > Rb > Cs
(c) Na < K < Li < Rb < Cs
(d) K < Na < Li < Rb < Cs

Answer 1

$\bold\green{Answer: }$

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➡ In Periodic Table The Atomic Size Decreases From The Left To right .

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➡ Due To the Efeective Nuclear Charge .

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➡ The Atomic Size Increases From Top To Bottom . Due To Increase in Number Of shells or orbit's

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➡ So The correct Order is .

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$\bold\orange {Li < Na < k < Rb < Cs }$

Answer 2

Answer:

a is the correct option