Question

Write the name of the given complex [Cu(CN)4]2-​

Answer 1

Answer:

It is called tetracyanocuprate

Explanation:

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Answer 2

[Cu(CN)₄]²⁻​

• The name of the complex is tetracyanocuprate(II) ion.

• Then oxidation state of copper in the complex is +2.

• During the formation of this complex, it is believed that the only unpaired 3d-electrons of Cu+2 ion (3d9) gets promoted to one of the 4p-orbitals thus making the vaailable one vacant d-orbital.

• The Cu+2 ion, therefore, undergoes dsp2 hybridisation.

• The comples thus formed is square planar and is paramagnetic due to the presence of one unpaired electron.