Which of the following statements is true regarding the energy levels of molecul

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Question: Which of the following statements is true regarding the energy levels of molecular orbitals?

Options:

Correct Answer: For second period elements, σ2p is lower than π2p.

Solution:

For second period elements, σ2p is lower in energy than π2p.

Which of the following statements is true regarding the energy levels of molecular orbitals?

Which of the following statements is true regarding the energy levels of molecular orbitals?

Correct Answer: True

Step 1: Understand that molecular orbitals are formed when atomic orbitals combine.
Step 2: Know that there are different types of molecular orbitals, such as sigma (σ) and pi (π) orbitals.
Step 3: Recognize that for second period elements (like B, C, N, O, F), the energy levels of these orbitals can vary.
Step 4: Learn that σ2p (sigma 2p) is a type of molecular orbital that is formed from the combination of 2p atomic orbitals.
Step 5: Understand that π2p (pi 2p) is another type of molecular orbital formed from the same atomic orbitals but has a different shape.
Step 6: Remember that in the case of second period elements, σ2p is lower in energy than π2p, meaning it is more stable.
Step 7: Conclude that the statement 'σ2p is lower in energy than π2p' is true for second period elements.

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