Question

What is A?
iv) C.H.-(CH3);CCOCI anh.AICI, (A)​

Answer 1

A is used to signify the atomic mass number (also known as atomic mass or atomic weight) of an atom. A = # protons + # neutrons. A and Z are integer values. When the actual mass of an atom is expressed in amu (atomic mass units) or g/mol then the value is close to A.