Radicals 部首

Flip through the following online book, paying close attention to the radicals.
https://www.wobook.com/WBGT1nZ5o70z/Characters-by-Radical.html

This is a Chinese Table of the elements. Look closely at the characters. There are only four radicals amongst all of the elements. Can you guess what they are? (The answer is at the very bottom of the page.) The other part of the characters are all phonetic elements, the sound parts (which you will learn about next).


from: https://en.wikipedia.org/wiki/Chemical_elements_in_East_Asian_languages


Recommended Reading
https://www.columbia.edu/itc/ealac/sobelman/radicals/
https://www.archchinese.com/arch_chinese_radicals.html
https://www.ctcfl.ox.ac.uk/Lang%20work/Radicals/Strokes&Radicals.htm