Given below are the atomic radii of some elements of second period.
`{:("Element",B,O,N,C,),("Atomic Radius in pm",88,66,74,77,):}`
Arrange these elements in the increasing order of their atomic number. Give reason for your answer.

Explanation

Along a period, the atomic numbers of the elements increase and atomic radii decrease. This means that the two are inversely proportional to each other.
Increasing order of atomic numbers : `BltCltNltO.`