d and f BLOCK ELEMENTS MCQ Quiz: GKFix - Bridge of Knowledge - Page 357

Question 1781

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What is the consequence of the Lanthanoid contraction on the atomic radii of 5d series elements compared to 4d series elements?

The radii of 5d elements become much larger than 4d elements
The radii of 5d elements become much smaller than 4d elements
The radii of 5d elements become nearly equal to 4d elements
The radii follow no predictable pattern

Question 1782

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How does the strength of interatomic interaction relate to the number of valence electrons in transition metals?

Fewer valence electrons lead to stronger interactions
More valence electrons lead to stronger interactions
It is independent of the number of valence electrons
It depends only on the specific element

Question 1783

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Which statement best describes the general trend of enthalpy of atomisation across the transition elements within a period?

It generally decreases with more valence electrons
It remains constant regardless of valence electrons
It generally increases with more valence electrons
It fluctuates randomly

Question 1784

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What is the effect of the poor shielding by d electrons on the atomic/ionic radius trend across a series?

It causes the radius to increase
It causes the radius to remain constant
It causes the radius to decrease
It has no effect

Question 1785

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Which series shows an atomic radius that is virtually the same as the corresponding element in the second series?

First (3d) series
Second (4d) series
Third (5d) series
All series are the same