Write the major product(s) in the following :
(i)
(ii) `2CH_(3)-underset(overset(|)(CH_(3)))(CH)-CH_(3) underset("dry ether")overset(Na)(to)`
(iii) `CH_(3)-CH_(2)-Br overset("AgCN")(to)`

Explanation

(i)
(ii) `2CH_(3)-underset(overset(|)(CH_(3)))(C)H-CI overset(Na)underset("dry ether")(to) CH_(3)-underset(overset(|)(CH_(3)))(C)H-underset(overset(|)(CH_(3)))(C)H-CH_(3)`
(iii) `CH_(3)-CH_(2)-Br overset(AgCN)(to) CH_(3)CH_(2)NC`