Exams › NEET › Chemistry

Which one of the following is an inner orbital complex as well as diamagnetic in behaviour? (Atomic number: Zn = 30, Cr = 24, Co = 27, Ni = 28)

1. [Zn(NH3)6]2+
2. [Cr(NH3)6]3+
3. [Co(NH3)6]3+
4. [Ni(NH3)6]2+

Correct answer: [Co(NH3)6]3+

Solution

The complex [Co(NH3)6]3+ is an inner orbital complex because Co3+ uses its 3d orbitals for hybridization (d2sp3) and is diamagnetic as all electrons are paired in the d-orbitals.

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 →