NEETChemistryd and f Block Elements
How would you account for the irregular variation of ionization enthalpies (first and seconD) in the first series of the transition elements?
Options
- AAll transition elements have the same effective nuclear charge.
- BThe irregular variations of ionization enthalpies can be attributed to the extra stability of configurations s
- CElectrons are added to the same principal energy level.
- DThe nuclear charge increases uniformly across the series.
Correct answer
B. The irregular variations of ionization enthalpies can be attributed to the extra stability of configurations s
Step-by-step solution
Correct Option is : (B) The irregular variations of ionization enthalpies can be attributed to the extra stability of configurations such as d 0 , d 5 , d 10 . Since these states are exceptionally stable, their ionization enthalpies are very high.