Select the incorrect statement (s) about the following reaction of ether synthesis.
RX + R' ONa \(\xrightarrow{}\) RO R' + NaX
1
It follows SN2 mechanism
2
Alkyl halide (RX) should be 2° or 3° while alkoxide (RO- Na+) should be 1°
3
Alkyl halide should be 1° while alkoxide should be 2° or 3°.
4
2° and 3° alkyl halides may undergo E2 elimination in the presence of a strong base to form alkenes.