Which of the following is correct for the azide `(N_(3)^(-))` ion?

Options

A. it is constidered as a pseufohalide ion
B. Analysis fo `N_(3)^(-)` is by reduction with `H_(2)S`
C. The `N_(3)^(-)` ion has `16` outer electorns and is isoelectronic with `CO_(2)`
D. all of these

Answer

4

Explanation

It forms the extremely unstable and explosive compounds fluorazide `FN_(3)`, chlorazide `ClN_(3)`, bromazide `BrN_(3)` and iodazide`IN_(3)` but the dimer `N_(3)-N_(3)` is unknown `NaN_(3)+H_(2)S+H_(2)OrarrNH_(3)+N_(2)+S+NaOH`
The `N_(3)^(-)` ion is linear `(N-N-N)` as is `CO_(2)` .