1.

A complex is represented as CoCl_(3).xNH_(3). Its 0.1 molal solution in water shows Delta T_(f)=0.558k. K_(f) for H_(2)O is 1.86K//"mol". Assuming 100% ionisation of complex and coordination numberof Co in six . The formula of complex is

Answer»

`[Co(NH_(3))_(6)]Cl_(3)`
`[Co(NH_(3))_(5)CL]Cl_(2)`
`[Co(NH_(3))_(4)Cl_(2)]Cl`
`[Co(NH_(3))_(3)Cl_(3)]`

ANSWER :B


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