MCQ
The energy is lowest for the orbital :
- ✓$4s$
- B$4p$
- C$3d$
- D$4f$
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(Atomic masses of $\mathrm{Ag}$ and $\mathrm{Cl}$ are $107.87$ and $35.5$ respectively)
($R $ = alkyl group; $en$ = ethylenediamine)
Statement $(I)$ : Kjeldahl method is applicable to estimate nitrogen in pyridine.
Statement $(II)$ : The nitrogen present in pyridine can easily be converted into ammonium sulphate in Kjeldahl method.
In the light of the above statements, choose the correct answer from the options given below.