d and f BLOCK ELEMENTS MCQ Quiz: GKFix - Bridge of Knowledge

Question 1436

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What is the consequence of Cu2+ having a d9 electronic configuration on its hydration process?

It makes hydration impossible.
It results in a perfectly spherical ion with no crystal field effects.
It only affects the color of the solution.
It leads to a specific crystal field stabilization energy that influences the overall hydration enthalpy.

Question 1437

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For a metal M, if the sum of its ΔaH°, IE1, and IE2 is very high, what is the likely impact on its E°(M2+/M) value, assuming ΔhydH° does not change drastically?

The E°(M2+/M) value will tend to be more negative (less positive).
The E°(M2+/M) value will be unaffected.
The E°(M2+/M) value will become zero.
The E°(M2+/M) value will tend to be less negative (more positive).

Question 1438

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Which of the following electronic configurations for a M2+ ion would likely contribute to a more negative E°(M2+/M) value than expected?

d4
d6
d8
d10

Question 1439

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Why is the comparison between observed and calculated E°(M2+/M) values useful?

It is only useful for elements with positive E° values.
It proves that thermochemical parameters are always accurate.
It is not useful as calculations are always wrong.
It helps identify the relative contributions and potential shortcomings of the thermochemical parameters used in the calculation.

Question 1440

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What is the expected E°(M2+/M) trend for the elements Sc, Ti, V, Cr, Mn?

Generally becoming more negative (less positive) from Sc to Mn.
Remaining constant from Sc to Mn.
Fluctuating randomly from Sc to Mn.
Generally becoming less negative (more positive) from Sc to Mn.

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