MCQ
Which of the following conversions involves change in both shape and hybridisation?
- A${H_2}O\, \to \,{H_3}{O^ + }$
- ✓$B{F_3}\, \to \,BF_4^ - $
- C$C{H_4}\, \to \,{C_2}{H_6}$
- D$N{H_3}\, \to \,NH_4^ + $

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To make it chiral compound the attack should be on which carbon atom
$\Delta E = - 2.0 \times {10^{ - 18}}\,J\left( {\frac{1}{{n_2^2}} - \frac{1}{{n_1^2}}} \right)$
the wavelength of the light that must be absorbed to excite hydrogen electron from level $n\, = 1$ to level $n\, = 2$ will be: $(h\, = 6.625\times10^{-34}\, J\,s,\, C\, = 3\times10^8\, m\,s^{-1})$