MCQ
The ether that undergoes electrophilic substitution reactions is
- ✓$C_6H_5OCH_3$
- B$CH_3OC_2H_5$
- C$CH_3OCH_3$
- D$C_2H_5OC_2H_5$
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

$3 s^{2}$; $3 s^{2} 3 p^{1}$; $3 s ^{2} 3 p ^{3}$; $3 s^{2} 3 p^{4}$
The correct order of first ionization enthalpy for them is.