Identify number of substrate those can give `S_(N^(1))" and "S_(N^(2))` reaction both .

S_(N^(1))and S_(N^(2)) reactions are

S_(N^1) and S_(N^2) reactions are

Explain the mechanism of S_(N^(1)) and S_(N^(2)) reactions with examples.

Explain the mechanism of S_(N^(1)) and S_(N^(2)) reactions with examples.

The correct decreasing order of reactivity for a given (R) group in both S_(N^(1)) " and " S_(N^(2)) reaction mechanism is :

What is the stereochemical result of S_(N)^(1) and S_(N) ^(2) reactions ?