Which of the following is the correct order of decreasing `S_(N^(2))` reactivity ?

Which of the following is the correct order of decreasing S_N2 2 reactivity' ? (X=a halogen)

Which of the following is correct order of reactivity

Which of the following is correct order of decreasing S N^2 reactivity

Which of the following is the correct order of decreasing reactivity towards nucleophilic substitution ?

Which of the following is the correct order of decreasing reactivity towards nucleophilic substitution reaction ?

The correct order of decreasing S_N2 respectively

Which of the following represent the correct order of decreasing reactivity?