Classification Of Elements And Periodicity In Properties Question 229
Question: Ionic radii are [CBSE PMT 2003, 04]
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:
Ionic radius in the nth orbit is given by $ r_{n}=\frac{n^{2}a}{Z} $ or $ r_{n}\propto \frac{1}{Z} $ where n is principal quantum number, a is Bohr’s radius of hydrogen atom and Z is the effective nuclear charge.
BETA
