Which of the following element has maximum first ionisation potential
A
V
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B
Ti
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C
Cr
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D
Mn
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Solution
The correct option is D Mn The first ionization energies of Ti,V,Cr and Mn are 656, 650, 652 and 717 kJ/mole respectively. I.E. increase in a period from L → R hence, manganese has maximum first ionisation potential.