Exams › NEET › Chemistry

Which statement is incorrect?

1. [Ni(CO)4] – Tetrahedral, paramagnetic
2. [Ni(CN)4]2– – Square planar, diamagnetic
3. [Ni(CO)4] – Tetrahedral, diamagnetic
4. [NiCl4]2– – Tetrahedral, paramagnetic

Correct answer: [Ni(CO)4] – Tetrahedral, paramagnetic

Solution

[Ni(CO)4] is tetrahedral and diamagnetic because CO is a strong field ligand that causes pairing of electrons in Ni's d-orbitals, leaving no unpaired electrons. Thus, option A is incorrect as it states paramagnetic.

Related NEET Chemistry questions

• What is the IUPAC name of \( K_{2}\left[P t C l_{6}\right] ? \)
• The structures of \( \left[N i(C O)_{4}\right] \) and \( \left[N i\left(\left(P h_{3}\right)_{3} P\right)_{2} C l_{2}\right] \) are:
• The IUPAC name of \( \left[\mathrm{Ni}\left(\mathrm{NH}_{3}\right)_{4}\right]\left[\mathrm{NiCl}_{4}\right] \) is :
• Some salts, although containing two different metallic elements, give test for one of them in solution. Such salts are:
• Actinides have higher tendency to form complexes than Lanthanides, due to
• Select the correct order of ions with respect to their ionic radii.

⚔️ Practice NEET Chemistry free + battle 1v1 →