Classification Of Elements And Periodicity In Properties Ques 254
Question: Ionic radii are
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.
Show Answer
Answer:
Correct Answer: C
Solution:
[c] Ionic radius in the $ n^{th} $ orbit is given by $ r_{n}=\frac{n^{2}a}{z} $ or $ r_{n}\propto \frac{1}{Z} $ Where n is principal quantum no., $ a_0 $ is Bohar’s radius of hydrogen atom and Z is the effective nuclear energy.
