231.

In [CO(H2O)6]²⁺, there are three unpaired electrons present. The $\mathrm{\mu }$_calculated is 3.87 BM which is quite different from the $\mathrm{\mu }$_experimental of 4.40 BM. This is because of

• increase in number of unpaired electrons

• some contribution of the orbital motion of the electron to the magnetic moment

• change in orbital spin of the electron

• d-d transition

Anhydrous mixture of KF and HF contain which types of ions?

• K⁺, H⁺, F^-

• {KF⁺, (HF^-)}

• KH⁺, F^-

• K⁺, H${\mathrm{F}}_2^{-}$

Magnetic moment of [Ti(H₂O)₆]⁴⁺, [Mn(H₂O)₆]²⁺ and [Cr(H₂O)₆]³⁺ can be represented as X, Y and Z. They are in order of

• X < Z < Y

• Z< Y < X

• X < Y < Z

• Z < Y < X

A chelating agent has two or more than two donor atoms to bind a single metal ion. Which of the following is not a chelating agent?

• Thiosulphato

• Glycinato

• Oxalato

• Ethane-1, 2-diamine

The magnetic nature of elements depends on the presence of unpaired electrons. Identify the configuration of transition element, which shows highest magmetic moment

• 3d⁷

• 3d⁵

• 3d⁸

• 3d²

Which one of the following has a coordinate bond?

• NH₄Cl

• AlCl₃

• NaCl

• Cl₂

Le-blanc process is employed in the manufacture of

• baking soda

• washing soda

• potash

• plaster of Paris

The complex ion which has no d-electrons in the central metal atom is

• [MnO₄]^-

• [Co(NH₃)₆]³⁺

• [Fe(CN)₆]^3-

• [Cr(H₂O)₆]³⁺

Which of the following does not have coordinate bond?

• SO₂

• HNO₃

• H₂SO₄

• HNO₂

Which of the following complex will exhibit facial and meridional isomerism?

• $\left[\mathrm{Co}\left({\mathrm{NH}}_3\right){\mathrm{Cl}}_3\right]$

• $\left[\mathrm{Co}\left({\mathrm{NH}}_3\right){\mathrm{Cl}}_2\right]\mathrm{Cl}$

• $\left[\mathrm{Co}{\left(\mathrm{en}\right)}_3\right]{\mathrm{Cl}}_3$

• ${\mathrm{K}}_3\left[\mathrm{Co}{\left(\mathrm{CN}\right)}_4{\mathrm{Cl}}_2\right]$