Atomic StructureEasy
Question
If elements which principle quantum number n > 4 were not allowed in nature, the number of possible elements would be
Options
A.60
B.32
C.4
D.64
Solution
The maximum number of electrons in an orbit are 2 n2. If n > 4, is not allowed, then the number of maximum electrons that can be in first four orbit are :
2(1)2 + 2(2)2 + 2(3)2 + 2(4)2 = 2 + 8 + 18 + 32 = 60
Therefore, possible element can be 60.
2(1)2 + 2(2)2 + 2(3)2 + 2(4)2 = 2 + 8 + 18 + 32 = 60
Therefore, possible element can be 60.
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