$A$ metalloid is

Which form of phosphorus is thermodynamically most stable?

Nitrogen combines with metals to form

Given below are two statements:
Statement $I$: Like nitrogen that can form ammonia,arsenic can form arsine.
Statement $II$: Antimony cannot form antimony pentoxide.
In the light of the above statements,choose the most appropriate answer from the options given below:

In which of the following is $NH_3$ $NOT$ used?

Which of the following pairs of oxoacids have a basicity of $2$?