Question

Give one example each of pseudo halide and pseudo halogen.

Answer 1

Hint: The word pseudo means “not genuine”, “fake” or “false”, etc I guess now you got an idea. Now try to figure out the answer by yourself. 

Complete step by step answer: 
In order to know the examples of pseudo halide and pseudo halogen, let us first understand what they actually are.
Basically actually halogens are the group one column to the left of the noble gases, fluorine, chlorine, bromine, iodine and astatine, as well as the theoretical ununseptium. But a pseudo halogen is an anion with similar properties to a halogen, but it isn’t a halogen.
 
1. The pseudo halogens are, generally -1, compound anions with stable structure which form compounds with similar reactions behaviors and properties as halides, and used as general substitutes in reactions with similar mechanisms. Generally properties of pseudo halogen are; they are weak bases by themselves which form strong acids when protonated, forming neutral salts in combination with metals and oxidizing electropositive elements. 
Examples of pseudo halogens are: cyanide, cyanate, azide etc.

2. Pseudo halide ions are nothing but are those which consist of two or more electronegative atoms. As we know nitrogen is one of them which have a property similar to the halide ions. The corresponding molecule of pseudo halide ion is called pseudo halogens. 
Examples: cyanide $(CN^-)$, cyaphide $(CP^-)$, isocyanide $(NC^-)$ etc.
Note: Remember that pseudo halogens are not always identical. For example, take sodium chloride and the pseudo halogen sodium azide. As we know the former is relatively harmless table salt which is consumed everyday. But you should know that the latter is generally so toxic that it is referred to as poison in biochemistry labs.