Among alkyl halides, order of reactivity of SN2 reaction is

CH3X> p-RX >Sec-RX > tert-RX

Discuss the factors which are mainly responsible for this order.

Fill in the following blanks:

(i) In the UV spectrum, the ethylenic chromophore shows an absorption band below -------------- nm.

(ii) In the IR spectrum, the cis isomer of internal alkenes gives band at --------- cm^-1.

What is resonance energy? Explain taking the example of benzene.

Arrange the following in the decreasing order of their basic strength:

alkanide anion; alkenide anion; alkynide anion

Justify your answer.

23. rite the structures of the following compounds:
24. (i) Methyl 3-methylbutanoate

2. 4-Hydroxy-4-methyl-2-pentanone

Describe the following: 

(i) Bergius Process

(ii) Fischer Process