Question

Why does the s orbital fill before the p orbitals?
A. The s orbital is lower in energy than the p orbital.
B. The s orbital holds fewer electrons than a p orbital.
C. The s orbital belongs to a different energy level than the p orbital.
D. The s orbital is higher in energy than the p orbital.

Answer 1

Answer: A. The s orbital is lower in energy than the p orbital

Explanation: Just did test

Answer 2

The S-Orbital fill before the p-orbital Because, The s-orbital is lower in energy than the p-orbital. Hence, Option (A) is correct.

What is Afbau principle?

The aufbau principle, from the German Aufbauprinzip, also called the aufbau rule, states that in the ground state of an atom or ion, electrons fill subshells of the lowest available energy, then they fill subshells of higher energy.

For example, the S subshell is filled before the P subshell is occupied.

Therefore, The S-Orbital fill before the p-orbital Because, The s-orbital is lower in energy than the p-orbital. Hence, Option (A) is correct.

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