MCQ
Which statement is not true
- A$He$ shows minimum boiling point among all zero gases
- B$S-S$ bond is not present in Marshall's acid
- ✓Producer gas is a mixture of $CO + N_2$
- D$HCl$ is liquid at room temperature

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Assertion $A$ : $\left[ CoCl \left( NH _3\right)_5\right]^{2+}$ absorbs at lower wavelength of light with respect to $\left[ Co \left( NH _3\right)_5\left( H _2 O \right)\right]^{3+}$
Reason $R$ : It is because the wavelength of the light absorbed depends on the oxidation state of the metal ion.
In the light of the above statements, choose the correct answer from the options given below :

