According to 'n+I' rule ,the value of 6f is 9 while 7s orbital has '7' value, it shows?
Correct answer: B. 7s placed first
- A. 6f filled first
- B. 7s placed first
- C. 7s placed later
- D. 6f placed later
Explanation
The (n+l) rule corresponds to the Aufbau principle where n represents the quantum number and l represents the azimuthal number. The Aufbau principle states that electrons fill lower-energy atomic orbitals before filling higher-energy ones (Aufbau is German for "building-up"). A lower (n+l) value indicates lower-energy orbitals which are filled first. Hence, 7s will be filled before 6f.
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