Radical 71

Radical 71 or radical not meaning "nothing" or "negative" is one of the 34 Kangxi radicals composed of 4 strokes.
In the Kangxi Dictionary, there are 12 characters to be found under this radical.
无 is also the 62nd indexing component in the Table of Indexing Chinese Character Components predominantly adopted by Simplified Chinese dictionaries published in mainland China, with being its associated indexing component.
无 as an individual character is a variant form of 無. In Simplified Chinese, 无 is used as the simplified form of 無.