Single Choice

The transition elements have

Apartly filled d-orbitals and completely filled higher s-orbitals
Bcompletely filled d-orbitals and partly filled higher s-orbitals
Ccompletely filled d-orbitals and completely filled s-orbitals
DAll of the above
Correct Answer

Solution

Transition elements have $$(I)$$ Partly filled d-orbitals and completely filled higher s-orbitals.eg $$Ti(Z=22):[Ar]{3d}^{2},{4s}^{2}$$ $$(II)$$ Completely filled d-orbitals and partly filled higher s-orbitals eg. $$Ag(Z=47):[Kr]{4d}^{10},{5s}^{1}$$ $$(III)$$ Completely filled d-orbitals and completely filled s-orbitals eg, $$Zn(Z=30): [Ar]{3d}^{10},{4s}^{2}$$

SIMILAR QUESTIONS

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

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

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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