Classification Of Elements And Periodicity In Properties Question 83
Ionic radii are the distances from the nucleus to the outermost electrons in an ion.
Options:
A) Directly proportional to effective nuclear charge
B) Directly proportional to square of effective nuclear charge
C) Inversely proportional to effective nuclear charge
D) Inversely proportional to square of effective nuclear charge.
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Answer:
Correct Answer: C
Solution:
Ionic radius in the $ n^{th} $ orbit is given by $ r_{n}=\frac{n^{2}a_0}{Z} $ or $ r_{n}\propto \frac{1}{Z} $ Where n is principal quantum no., $ a_0 $ is Bohr’s radius of hydrogen atom and Z is the effective nuclear charge.
BETA
