Single Choice

Which of the following has second ionisation potential less than expected?

ACr
BZn
Correct Answer
CV
DMo

Solution

Zn has second ionisation potential less than expected due to increased shielding effect the attraction of electrons towards the nucleus decreases.

SIMILAR QUESTIONS

d - block and f - block Elements

The transition elements have

d - block and f - block Elements

Why first ionization enthalpy of $$Cr$$ is less than that of $$Zn$$?

d - block and f - block Elements

Ionization enthalpies of $$Ce, Pr $$ and $$Nd$$ are higher than $$Th, Pa$$ and $$U$$. Why?

d - block and f - block Elements

Give reason for: Transition metals have high enthalpies for atomisation.

d - block and f - block Elements

Give reason: The $$E^{\circ}$$ value for the $$Mn^{3+}|Mn^{2+}$$ couple is much more positive than that for $$Cr^{3+}|Cr^{2+}$$ couple or $$Fe^{3+}|Fe^{2+}$$ couple.

d - block and f - block Elements

Give reason: The enthalpies of atomisation of transition elements are high.

d - block and f - block Elements

Explain: The enthalpies of atomisation of transition metals are quite high.

d - block and f - block Elements

The elements of 3d transition series are given as: $$Sc$$ $$Ti$$ $$V$$ $$Cr$$ $$Mn$$ $$Fe$$ $$Co$$ $$Ni$$ $$Cu$$ $$Zn$$ Copper has exceptionally positive $$E_{M^{2+}/M}^{\circ}$$ value. Why?

d - block and f - block Elements

Account for: $$E^{\circ}_{M^{2+}/M}$$ values for transition metals show irregular variation.

d - block and f - block Elements

Ionisation potential values of d-block elements as compared to ionization potential value of f-block elements are

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