GK
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The total number of proton and neutron tells the ____ of an atom
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Atomic mass
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Atomic number
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electron configuration
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isotope
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Explanation:
Detailed explanation-1: -The total number of protons and neutrons in the nucleus of an atom is called its mass number.
Detailed explanation-2: -Review: An element’s or isotope’s atomic number tells how many protons are in its atoms. An element’s or isotope’s mass number tells how many protons and neutrons in its atoms.
Detailed explanation-3: -Atomic mass of an element is defined as the total mass of its protons and neutrons. It is expressed in terms of atomic mass unit (amu) or unified unit (u).
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