Q57 / 200 · Manipal (MET) 2014 · Chemistry

The dominant factor in determining the IE of the elements on moving down the groups is its

Correct answer
A
atomic radius
B
effective nuclear charge
C
Both (a) and (b)
D
None of the above

Solution

Along a group $Z$ (effective nuclear charge) is almost constant. Thus, IE depends mainly on $r_n$ (atomic radius).

Hence, the correct answer is option: 'A'.

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