S Block Elements Question 287
Question: The first ionisation energies of alkaline earth metals are higher than those of the alkali metals. This is because
[UPSEAT 2001]
Options:
A) There is increases in the nuclear charge of the alkaline earth metals
B) There is decreases in the nuclear charge of the alkaline earth metals
C) There is no change in the nuclear charge
D) None of these
Show Answer
Answer:
Correct Answer: A
Solution:
The size of alkaline earth metals is smaller as compared to its corresponding alkali metals and its effective nuclear charge is also more than that of its corresponding alkali metals.
BETA
