Cobalt vs. Cobaltate

[Katie Bart 1I]

How do you know whether the name of a compound has, for example, cobalt versus cobaltate at the end of it?

[Sydney Jacobs 1C]

The suffix -ate is added to the stem of the metal's name if the complex has an overall negative charge (an anionic complex). For example, the complex [Ni(CN)4] has a 2- charge, so the name of the ion would be hexacyanidoferrate (II) ion. Hope that helps!

[KSong_1J]

-ate is used if the complex is an anion (is overall negatively charged), so that's when colbatlate would be used. If the complex has an overall positive charge, you would use cobalt.

[Helen Struble 2F]

Colbatate indicates that the entire compound has a negative charge. This means the coordination compound is an anion and can form an ionic bond with a cation to form another compound.

[kristi le 2F]

Additionally, sometimes the -ate is added to the stem of the metal's name not the metal name as it appears on the periodic table. For example, iron is denoted ferrate.