Title: Electronic structure of O2

Q: What is the electronic structure of oxygen? (Multiple answers possible)
- [He] 2s^0 2p^6
- [He] 2s^2 2p^4 (correct)
- 1s^2 2s^2 2p^4 (correct)
- 2s^2 2p^4
- 2s^2 2p6
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Q: How many electrons has a diatomic oxygen molecule O_2?
- 8
- 10
- 16 (correct)
- 18
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- [Image: |sigma3-sigma3*| < |sigma1-sigma1*|, |sigma3-sigma3*| > |pi-pi*|]
- [Image: |sigma3-sigma3*| > |sigma1-sigma1*|, |sigma3-sigma3*| < |pi-pi*|]
- [Image: |sigma3-sigma3*| > |sigma1-sigma1*|, pi < sigma3 < pi* < sigma3*]
- [Image: |sigma3-sigma3*| < |sigma1-sigma1*|, |sigma3-sigma3*| < |pi-pi*|]
- [Image: |sigma3-sigma3*| > |sigma1-sigma1*|, |sigma3-sigma3*| > |pi-pi*|]
Q: Right
A: [Image: |sigma3-sigma3*| > |sigma1-sigma1*|, pi < sigma3 < pi* < sigma3*]
Q: Wrong
A: [Image: |sigma3-sigma3*| < |sigma1-sigma1*|, |sigma3-sigma3*| > |pi-pi*|]; [Image: |sigma3-sigma3*| > |sigma1-sigma1*|, |sigma3-sigma3*| < |pi-pi*|]; [Image: |sigma3-sigma3*| < |sigma1-sigma1*|, |sigma3-sigma3*| < |pi-pi*|]; [Image: |sigma3-sigma3*| > |sigma1-sigma1*|, |sigma3-sigma3*| > |pi-pi*|]

Q: Is O_2 paramagnetic?
- Yes (correct)
- No
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[Image: electronic structure of O2]

- [Image: B2]
- [Image: C2]
- [Image: N2]
- [Image: O2]
Q: Strongest bond
A: [Image: N2]
Q: Second strongest bond
A: [Image: O2]
Q: Third strongest bond
A: [Image: C2]
Q: Weakest bond
A: [Image: B2]