Q.The $IE_1$ and $IE_2$ in $kJ/mol$ of a few elements are given below: \n (I) $520, 7300$ \n (II) $419, 3051$ \n (III) $1681, 3374$ \n Which element is likely to be an alkali metal?

I and II

Only I

Only III

Only II

The correct solution involves applying the fundamental concept to derive the final value step by step...

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Q.The IE1IE_1IE1​ and IE2IE_2IE2​ in kJ/molkJ/molkJ/mol of a few elements are given below: \n (I) 520,7300520, 7300520,7300 \n (II) 419,3051419, 3051419,3051 \n (III) 1681,33741681, 33741681,3374 \n Which element is likely to be an alkali metal?