Atoms And Nuclei Question 1
Question: If in nature there may not be an element for which the principal quantum number n > 4, then the total possible number of elements will be [IIT 1983; MP PET 1999; RPMT 1999; RPET 2001]
Options:
A) 60
B) 32
C) 4
D) 64
Show Answer
Answer:
Correct Answer: A
Solution:
For n=1, maximum number of states
$ =2n^{2}=2 $ and for n = 2, 3, 4, maximum number of states would be 8, 18, 32 respectively,
Hence number of possible elements = 2 + 8 + 18 + 32 = 60.
