Classification Of Elements And Periodicity In Properties Ques 239
Question: Order of first ionization potentials of elements Li, Be, B, Na is [Kerala CET 2005]
Options:
A) Li > Be >B > Na
B) Be >B > Li > Na
C) Na > Li > B > Be
D) Be > Li > B > Na
E) B > Be > Li > Na
Show Answer
Answer:
Correct Answer: B
Solution:
Ionization potential increases as we go from left to right in a period, while it decreases as we come down a group. Be B Li Na 9.3 8.3 5.4 5.1
