MCQ
Transition metals show paramagnetism
- ADue to characteristic configuration
- BHigh lattice energy
- CDue to variable oxidation states
- ✓Due to unpaired electrons
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${C_6}{H_5}(l)\, + \,\frac{{15}}{2}\,{O_2}(g)\, \to \,6\,C{O_2}(g)\, + \,3{H_2}O\,(l);$ $\Delta H = \,-\,3271\,kJ$
What is $\Delta U$ for the combustion of $1.5\,mole$ of benzene at $27\,^oC$ ? .....$kJ$

$\xrightarrow[\Delta ]{{{H^ \oplus }}}\,B$
The product $"B"$ is