D And F Block Elements 01 Ques10
Question: What is the lanthanide contraction, and how does it affect the formation of interstitial compounds and alloys?
Options:
A) Increase in atomic radius, leading to more interstitial compound formation
B) Decrease in atomic radius, leading to less interstitial compound formation
C) Increase in atomic radius, leading to less alloy formation
D) Decrease in atomic radius, leading to more similar chemical properties across the series
Show Answer
Answer: d
Explanation:
A) Lanthanide contraction is not an increase in atomic radius.
B) While lanthanide contraction is a decrease in atomic radius, it doesn’t necessarily lead to less interstitial compound formation.
C) Lanthanide contraction is not an increase in atomic radius.
D) Lanthanide contraction is the decrease in atomic radius across the lanthanoid series, leading to more similar chemical properties and allowing for easier substitution in alloys.
BETA
