WAEC Chemistry 2010 Objective — Question 1
Question 1 of 49 from the West African Examinations Council (WAEC) Chemistry 2010 Objective paper, with the correct answer and a full explanation.
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The electron configuration of carbon atom in its excited state is [6C]
- A. A. 1s²2s²2px¹2py¹
- B. B. 1s²2s²2px²2py⁰
- C. C. 1s¹2s¹2px¹2py¹2pz¹
- D. D. 1s¹2s¹2px¹2py¹2pz¹Correct
Explanation
In the ground state, the electronic configuration of 6C = 1s²2s²2p². In the excited state, an electron moves from the 2s-orbital into a 2p-orbital, so the structure becomes 1s²2s¹2px¹2py¹2pz¹.
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