The aqueous solution of transition metal salt changes colour from pink to blue, when concentrated hydrochloric acid is added to it. The change In colour is due to
The aqueous solution of transition metal salt changes colour from pink to blue, when concentrated hydrochloric acid is added to it. The change In colour is due to
- A
evolution of hydrogen that changes the oxidation state of the metal ion
- B
change in the coordination number of the metal ion from $6$ to $4$ and formation of new species in solution
- C
formation of a coordination complex of the metal ion with hydrochloric acid
- D
protonation of the metal ion
Similar Questions
The Azimuthal quantum number for the valence electrons of $\mathrm{Ga}^{+}$ion is $.....$
(Atomic number of $\mathrm{Ga}=31$ )
The Azimuthal quantum number for the valence electrons of $\mathrm{Ga}^{+}$ion is $.....$
(Atomic number of $\mathrm{Ga}=31$ )
- [JEE MAIN 2021]
Which of the following contain $'Sn'$ metal
Which of the following contain $'Sn'$ metal
Which of the following ions is coloured
Which of the following ions is coloured
Why the transition elements are hard and have high melting and boiling points?
Why the transition elements are hard and have high melting and boiling points?
Which have melting point below $500\,^{\circ} C$.
Which have melting point below $500\,^{\circ} C$.
- [AIIMS 2019]