MCQ
The oxide which cannot act as a reducing agent is
- A$S{O_2}$
- B$N{O_2}$
- ✓$C{O_2}$
- D$Cl{O_2}$
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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: $(h\, = 6.625\times10^{-34}\, J\,s,\, C\, = 3\times10^8\, m\,s^{-1})$
