MCQ
Which of the following statements concern with transition metals ?
- Acompounds containing ions of transition elements are usually coloured
- Bthe most common oxidation state is $+3$
- Cthey easily form complexes
- ✓All of the above
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

$K = \left( {4.5 \times {{10}^{11}}{S^{ - 1}}} \right){e^{ - \left( {28000\frac{{{K^2}mol}}{J}} \right)\frac{R}{T}}}$
The activation energy of reaction (in $J/mol$) is
Assertion $A:$ Butan$-1-$ol has higher boiling point than ethoxyethane.
Reason $R:$ Extensive hydrogen bonding leads to stronger association of molecules.
In the light of the above statements, choose the correct answer from the options given below: