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The d-And-f-Block Elements
Question
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For the first row transition metals the E° values are:
E° V Cr Mn Fe Co Mc Cu
(M2+/M) –1.18 –0.91 –1.18 –0.44 –0.28 –0.25 +0.34
Explain the irregularity in the above values.

Answer

The E° (M2+/M) values are not regular which can be explained from the irregular variation of ionisation enthalpies (IE1 + IE2) and also the sublimation energies which are relatively much less for manganese and vanadium (240 kJ mol–1 for manganese and 470 kJ mol–1 for vanadium).

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Some More Questions From The d-And-f-Block Elements Chapter

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