Which of the two, NO_(2)CH_(2)CH_(2)O^(oplus) or CH_(3)CH_(2)O^(oplus) is expected to be more stable and why?

Which of the two, NO_(2)CH_(2)CH_(2)O^(oplus) or CH_(3)CH_(2)O^(oplus)

1.	Which of the two, NO_(2)CH_(2)CH_(2)O^(oplus) or CH_(3)CH_(2)O^(oplus) is expected to be more stable and why?
Answer» SOLUTION : (I) is more stable than (II) because`NO_(2)` group has `-I` effect and HENCE it tends to disperse the `-ve` charge on the O-atom. In CONTRAST, `CH_(3)CH_(2)` has `+I` effect.It THEREFORE, tends to intensify the `-ve` charge and hence destablizes it.