d and f BLOCK ELEMENTS MCQ Quiz: GKFix - Bridge of Knowledge - Page 68

Question 336

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Why is the chemistry of post-actinoid elements less developed compared to post-lanthanoid elements?

Post-actinoid elements are stable.
Post-actinoid elements are easier to study.
It is not explicitly stated in the text.
Post-actinoid elements are more abundant.

Question 337

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What is the significance of the statement that actinoid contraction has extended effects on succeeding elements?

It only affects the actinoids themselves.
It makes succeeding elements larger.
It influences the properties of later elements in the periodic table.
It stops after the last actinoid.

Question 338

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How does the reactivity of actinoids with non-metals at moderate temperatures compare to typical metal-nonmetal reactions?

It requires extremely high temperatures.
It only occurs under pressure.
It is notable for occurring at relatively accessible temperatures.
It is slower than typical reactions.

Question 339

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What is a consequence of the formation of protective oxide layers on actinoid metals when exposed to nitric acid?

It causes violent reaction.
It leads to complete dissolution.
It results in only slight attack by nitric acid.
It produces hydrogen gas.

Question 340

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What is the general trend in magnetic susceptibility for actinoids with increasing unpaired 5f electrons?

It decreases steadily.
It increases steadily.
It is identical to lanthanoids.
It is roughly parallel to lanthanoids but with lower values.