Choose the elements with their correct symbols.
Boron - B
Symbols of elements are written as per the IUPAC guidelines. The first letter of a symbol must always be written in upper case and the second letter in lower case.
Example: Argon - Ar, Barium - Ba, Chlorine - Cl, Aluminium - Al, Fluorine - F, Zinc - Zn, Boron - B, etc.