Question

QUANTUN
6. In phosphorus atom, how many orbitals are less energetic than 3d , orbital?
a 5
(b 10
C 9
d 14

Answer 1

Answer:

9 is the answer bro hope it helps you

Answer 2

Answer:

There are 5 orbitals with less energy than 3d orbitals.

Explanation:

• Phosphorous has atomic number 15. This means it has 15 electrons.
• According to Aufbau principle, its electronic configuration would be 1s² 2s² 2p⁶ 3s² 3p³.
• In terms of energy there are total 6 orbitals with less energy than 3d : 1s, 2s, 2p, 3s,3p, 4s.
• But taking Phosphorous configuration into account there is total of 5 orbitals filled and thus 5 orbitals with less energy than 3d.
• Thus, the answer is 5.

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