S Block Elements Question 210
Question: Magnitude of which of the following property of alkali metals increases with the increase of atomic number
[MP PMT 1987]
Options:
A) Electronegativity
B) Ionic radius
C) First ionization energy
D) Melting point
Show Answer
Answer:
Correct Answer: B
Solution:
| Element - | Li | Na | K | Rb | Cs |
|---|---|---|---|---|---|
| Ionic radius - (pm) | 76 | 102 | 138 | 152 | 167 |
as the atomic no. increases the no. of shells increases hence, atomic radius increases.
BETA
