Mass number is the sum of ?

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Biology and Chemistry Tuitions

The total number of nucleons - protons and neutrons in the nucleus of an atom is called the Mass Number
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Balu Physics

Number of Protons and Number of Neutrons
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explain problems in easy method.

mass number it is called as nucleon. nucleon=proton +nuetron
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Don't want to over express myself, just join and feel the experience.

Proton number and neutron number
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Tutor

It is the total number of protons and neutrons in an atomic nucleus.
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Chemistry

Total number protons and neutrons.
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Online tutor for physics

number of protons and neutrons
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Biotechnology teaching and research

Mass number is the sum of protons and neutrons, which are together known as nucleons. Mass number is also called as atomic mass number or nucleon number.
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Chemistry Teacher

The mass number is the total number of protons and neutrons (together known as nucleons) in an atomic nucleus. The mass number is written as a superscript to the left of an element's symbol. For example, the most common isotope of carbon is carbon 12 C which has 6 protons and 6 neutrons.
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Post Graduate in Organic chemistry

The total number of protons and neutron in an atomic nucleus is called Mass number (or) atomic mass number (or) nucleon represented by A
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