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Questions  

The ionization potential values of an element are in the following order I1 < I2 <<<< I3 <I4 < I5 the element is a/an

a
Alkali metal
b
Chalcogen
c
Halogen
d
Alkaline earth metal

detailed solution

Correct option is D

Sudden jump in 3rd IP indicates that the element has two valence electrons ;The element belongs to 2nd group (ns2) ;

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