【单选题】Compared with the generation of our grandparents, who grew up in an age when people were lack of almost every kind of materials, we should be content with the ____ supply.
【简答题】已知两种钴的配合物具有相同的化学式 Co(NH 3 ) 5 BrSO 4 ,它们之间的区别在于:在第一种配合物的溶液中加 BaCl 2 时,产生 BaSO 4 沉淀,但加 AgNO 3 时,不产生沉淀;第二种配合物的溶液则与之相反。根据以下资料,回答问题: ( A ) [Co(NH 3 ) 5 Br]SO 4 ;( B ) [Co(NH 3 ) 5 SO 4 ]Br ;( C ) +2 ;( D ...
【单选题】在配合物[Co(NH 3 ) 5 Cl]Cl 2 中,配位原子是( )
【单选题】Which is not that important compared with the other things when we pack our backpack before a typhoon comes?
【简答题】配合物命名:写在练习本上,拍照上传。 (1) H 2 [SiF 6 ] ; (2) [Fe(CO) 5 ] ; (3) K 3 [Fe(CN) 6 ] ; (4) [Co(NH 3 ) 5 H 2 O]Cl 3 ; 。
【单选题】Generally speaking, compared with the domestic trade, there are more difficulties and risks when we do international trade.
【单选题】在配合物 [Co(ONO)(NH 3 ) 5 ] 2+ ,配位原子为