SATHEE: D-And F-Block Elements Ques 507

D-And F-Block Elements Ques 507

Question: The radius of $L a^{3 +}$ (Atomic number of La = 57) is $1.06 \overset{o}{A},$ . Which one of the following given values will be closest to the radius of $L a^{3 +}$ (Atomic number of Lu= 71)-

Options:

A) $1.40 \overset{o}{A},$

B) $1.06 \overset{o}{A},$

C) $0.85 \overset{o}{A},$

D) $1.60 \overset{o}{A},$

Show Answer

Answer:

Correct Answer: C

Solution:

$I o n i c r a d i i, \propto \frac{1}{z}$ Thus, $\frac{z_{2}}{z_{1}} \Rightarrow \frac{1.06}{(I o n i c, r a d i i, o f, L u^{3 +})} = \frac{71}{57}$
$\Rightarrow$ Ionic radii of $L u^{3 +} = 0.85 \overset{o}{A},$

D-And F-Block Elements Ques 507

Question: The radius of $L a^{3 +}$ (Atomic number of La = 57) is $1.06 \overset{o}{A},$ . Which one of the following given values will be closest to the radius of $L a^{3 +}$ (Atomic number of Lu= 71)-

Options:

Answer:

Solution:

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D-And F-Block Elements Ques 507

Question: The radius of La3+ (Atomic number of La = 57) is 1.06Ao, . Which one of the following given values will be closest to the radius of La3+ (Atomic number of Lu= 71)-

Options:

Answer:

Solution:

Engineering Preparation

Medical Preparation

NCERT Books & Solutions

Important Resources

Other Resources

Syllabus

Test Platform

Sample Mock Test

Mentorship

NCERT Exercise Video Solution

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Question: The radius of $L a^{3 +}$ (Atomic number of La = 57) is $1.06 \overset{o}{A},$ . Which one of the following given values will be closest to the radius of $L a^{3 +}$ (Atomic number of Lu= 71)-