Question

What is the formula of mass number ?

Answer 1

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ANSWER==

The mass number (symbol A, from the German word Atomgewicht (atomic weight), also called atomic mass number or nucleon number, is the total number of protons and neutrons (together known as nucleons) in an atomic nucleus. It determines the atomic mass of atoms.

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Answer 2

Answer:

Formula of mass number is A. The sun total of the number of protons and the number of neutrons present in the nucleus of an atom of an element. It is represented by the letter A. The formula of mass number(A) =Number of protons +Number of neutrons =atomic number +Number of neutrons. Mass number are respectively written as superscript