d and f BLOCK ELEMENTS MCQ Quiz: GKFix - Bridge of Knowledge - Page 312

Question 1556

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What is the electronic configuration of Cr+?

3d5
3d4 4s1
3d6
3d3 4s2

Question 1557

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What is the electronic configuration of Mn2+?

3d5
3d3 4s2
3d7
3d6

Question 1558

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What does the text suggest about generalizing the stability of oxidation states based solely on ionisation enthalpies?

It is a complex problem not amenable to ready generalisation
Ionisation enthalpies are the sole determinant
Higher ionisation enthalpies always mean more stable oxidation states
Lower ionisation enthalpies always mean less stable oxidation states

Question 1559

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According to the text, what is the general difficulty associated with achieving oxidation states greater than +2 for elements like Cu, Ni, and Zn?

High third ionisation enthalpies make it difficult
Low first ionisation enthalpies make it difficult
They lack d-orbitals
They have very high electronegativity

Question 1560

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What is a notable feature of transition elements regarding their oxidation states, according to the text?

They show a great variety of oxidation states in their compounds
They only show one oxidation state
They show fewer oxidation states than main group elements
They only show positive oxidation states