d and f BLOCK ELEMENTS MCQ Quiz: GKFix - Bridge of Knowledge - Page 309

Question 1541

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According to Hund's rule as described in the text, what electron configuration corresponds to the lowest energy state?

Maximum possible extent of single occupation of orbital and parallel spins
Maximum possible extent of paired occupation of orbitals
Minimum possible extent of single occupation of orbitals
Random occupation of orbitals with mixed spins

Question 1542

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What is the primary reason given for the stabilization of energy states in transition metals?

Exchange energy
Kinetic energy
Potential energy
Nuclear charge

Question 1543

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How does the text describe the complexity of predicting oxidation state stability using ionisation enthalpies?

It states the problem is very complex and not amenable to ready generalisation
It states ionisation enthalpies are the only factor
It states higher ionisation enthalpies always mean more stable oxidation states
It states lower ionisation enthalpies always mean less stable oxidation states

Question 1544

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What general statement does the text make about third ionisation enthalpies of transition metals?

In general, the third ionisation enthalpies are quite high
In general, the third ionisation enthalpies are quite low
In general, the third ionisation enthalpies are unpredictable
In general, the third ionisation enthalpies are equal for all transition metals

Question 1545

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What does the text state about the third ionisation enthalpies of d5 (Mn2+) and d10 (Zn2+) ions?

They show greater difficulty of removing an electron, indicating high values
They are unusually low
They are approximately equal
They depend only on atomic number