（选修三）【物质结构与性质】(1)氯化铬酰(CrO 2 Cl 2 )在有机合成中可作氧化剂或氯化剂，能与许多有机物
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| (1)1s 2 2s 2 2p 6 3s 2 3p 6 3d 5 4s 1 {或[Ar]3d 5 4s 1 }；钾、铜；非极性 (2)①；②；角形（或V形或折线形）；3：1 (3)①能量最低原理；②CO 2 、N 2 O、N 3 - ；③Al(或铝)；Be+2OH - =BeO 2 2- +H 2 ↑ |
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