- #1
erisedk
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Homework Statement
If elements with principal quantum number n > 4 were not allowed in nature, the number of possible elements would be
(A) 60
(B) 32
(C) 4
(D) 64
Homework Equations
The Attempt at a Solution
I got 36 from the periodic table (2+8+8+18)
However, that isn't even an option. The answer is 60. Please help.