Questions
According to the Aufbau principle, which is the sequential order of filling subshells in a ground state atom?
a
3s 3p 3d
b
3p 4s 3d
c
3d 4s 4p
d
4p 4d 4
detailed solution
Correct option is B
The sequential order of filling subshells in a ground state atom is 3p 4s 3d
According to the Aufbau principle, an electron fills orbitals in ascending energy sequence.
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