S Block Elements Question 206
Question: As compared to potassium, sodium has
[MP PMT 1985]
Options:
A) Lower electronegativity
B) Higher ionization potential
C) Greater atomic radius
D) Lower melting point
Show Answer
Answer:
Correct Answer: B
Solution:
Element | Na | K |
---|---|---|
$ IE_1 $ | 496 | 419 |
$ IE_2 $ | 4562 | 3051 |
Sodium has higher I.E. because of smaller atomic size.