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W、X、Y、Z 4种元素原子序数依次减小。已知W的原子序数为29；X原子p轨道共有11个电子；Y是第三周期主族元素，其部分电离能数据如下表；Z原子价电子排布式为ns n np n 。请回答下列问题 (1)W基态原子的电子排布式为__________。 (2)电负性：X___Y（填“>”、“=”或“(3)R是与X同主族的短周期元素。R的氢化物沸点比X的氢化物高，原因是_____________。 (4)Z 2 X 4 中，Z原子采用______杂化，每个分子中含有______个σ键，____个π键。 (5)已知W 2+ 能与氨分子形成配离子[W(NH 3 ) 4 ] 2+ ，该配离子中存在的化学键有____。（填标号） A． B．离子键 C．共价键 D．配位键
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