Question

The ions that are present in the aqueous solution of Na3 (Co(NO2)6]
are :
a)Na+,Co3+,and No2-
b)Na+and No2-
c)Na+and (Co(No2)6)3-
d)Co3+and No2-​

Answer 1

IUPAC name of Na

3

[Co(NO

2

)

6

] is:

Medium

Solution

verified

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Correct option is B)

First, we note that the name of the counter ion is sodium, now we write the name of the complex ion. It contains cobalt(III), so, it will be called as cobaltate(III). Also, it contains 6 NO

2

groups, so, it will be hexa nitrito.

Combining, we get that the name of the negative ion is hexanitritocobaltate(III) and the name of the compound becomes Sodium hexanitritocobaltate(III).