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Date: 3-1-2017
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Date: 16-2-2018
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AX4 Molecules: CH4 (Four Electron Groups)
1. The central atom, carbon, contributes four valence electrons, and each hydrogen atom has one valence electron, so the full Lewis electron structure is
2. There are four electron groups around the central atom. Repulsions are minimized by placing the groups in the corners of a tetrahedron with bond angles of 109.5°.
3. All electron groups are bonding pairs, so the structure is designated as AX4.
4. With four bonding pairs, the molecular geometry of methane is tetrahedral.
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قسم الشؤون الفكرية وجامعة العميد يصدران العدد 31 من مجلة تسليم
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