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【多选题】
关于配位体,下列说法中正确的是A.
配位体中含孤电子对与中心原子形成配位键的原子称为配位原子
B.
配位原子是多电子原子，常见的是VA、VIA、VIIA等主族元素的原子
C.
只含一个配位原子的配位体称单齿配位体
D.
含两个配位原子的配位体称螯合剂
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A.
Her arm needs an X-ray check.
B.
She played the basketball too long each time.
C.
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D.
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