Rate of reactivity of CH3Br is __________ times the rate of reactivity of (CH3)2CHBr towards SN2 .
30
50
1500
600
Rare of reactivity towardsSN2
CH3Br(30) > CH3CH2Br(1) > (CH3)2CHBr(0.02) > (CH3)3 CBr; 1500 50 1