MCQ
Which of the following transitions have minimum wavelength
- ✓${n_4} \to {n_1}$
- B${n_2} \to {n_1}$
- C${n_4} \to {n_2}$
- D${n_3} \to {n_1}$
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$(1)$ $(CH_3)_3 {\bar{\ddot{C}}}$
$(2)$ ${(C{H_3})_2}{\bar {\ddot {CH}}}$
$(3) $ $C{H_3}{\bar{\ddot{C{H_2}}}}$
$(4)$ ${C_6}{H_5}{\bar{\ddot{C{H_2}}}}$ is