MCQ
In graphite, electrons are
- ALocalised on every third $C$ atom
- BPresent in antibonding orbital
- CLocalised on each $C$ atom
- ✓Spread out between the structure
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$\Delta E = - 2.0 \times {10^{ - 18}}\,J\left( {\frac{1}{{n_2^2}} - \frac{1}{{n_1^2}}} \right)$
the wavelength of the light that must be absorbed to excite hydrogen electron from level $n\, = 1$ to level $n\, = 2$ will be: $(h\, = 6.625\times10^{-34}\, J\,s,\, C\, = 3\times10^8\, m\,s^{-1})$
$(I) \,C_6H_5CH_3$
$(II)\, C_6H_5COOH$
$(III)\, C_6H_6$
$(IV) \,C_6H_5NO_2$