NEETChemistryd and f Block Elements
For the first-row transition metals, the E ⊖ values are: E ⊖ V Cr Mn Fe Co Ni Cu (M 2+ /M) –1.18 –0.91 –1.18 –0.44 –0.28 –0.25 +0.34 Which of the following options explain the irregularity in the above values?
Options
- AThe number of valence electrons increases uniformly across the series.
- BAll transition metals have the same effective nuclear charge.
- Ccan be explained by the irregular variation of ionization enthalpies and also the sublimation enthalpies which
- DThe ionization energy decreases uniformly from V to Cu.
Correct answer
C. can be explained by the irregular variation of ionization enthalpies and also the sublimation enthalpies which
Step-by-step solution
Correct Option is : (C) can be explained by the irregular variation of ionization enthalpies and also the sublimation enthalpies which are relatively much less for manganese and vanadium.