1.

The formula of pentaaquanitratochromium(III)nitrate is

Answer»

`[CR(H_(2)O)_(6)](NO_(3))_(3)`
`[Cr(H_(2)O)_(6)](NO_(2))_(2)`
`[Cr(H_(2)O)_(5)NO_(3)](NO_(3))_(2)`
`[Cr(H_(2)O)_(5)NO_(2)]NO_(3)`

ANSWER :C


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