In the molecular orbital diagram of diatomic nitrogen (N2), which orbitals are f

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Question: In the molecular orbital diagram of diatomic nitrogen (N2), which orbitals are filled first?

Options:

Correct Answer: σ2s, σ*2s

Solution:

In N2, the 2s orbitals (σ2s and σ*2s) are filled before the 2p orbitals.

In the molecular orbital diagram of diatomic nitrogen (N2), which orbitals are filled first?

In the molecular orbital diagram of diatomic nitrogen (N2), which orbitals are filled first?

Correct Answer: 2s orbitals (σ2s and σ*2s) are filled first.

Step 1: Understand that nitrogen (N) has 7 electrons, and diatomic nitrogen (N2) has a total of 14 electrons (7 from each nitrogen atom).
Step 2: Know that in molecular orbital theory, electrons fill orbitals starting from the lowest energy level to the highest.
Step 3: Identify the first set of orbitals to fill, which are the 2s orbitals (σ2s and σ*2s).
Step 4: Fill the σ2s orbital with 2 electrons first, then fill the σ*2s orbital with the next 2 electrons.
Step 5: After filling the 2s orbitals, move on to the 2p orbitals (π2p and π*2p) to fill them next.

Molecular Orbital Theory – Understanding how atomic orbitals combine to form molecular orbitals and the order in which they are filled based on energy levels.
Orbital Filling Order – Knowledge of the specific order in which molecular orbitals are filled, particularly for diatomic molecules like N2.