why sum of protons and neutrons is equal to relative mass number of a atom?
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1.Neutral atoms of each element contain an equal number of protons and electrons.
2.The number of protons determines an element’s atomic number and is used to distinguish one element from another.
3.The number of neutrons is variable, resulting in isotopes, which are different forms of the same atom that vary only in the number of neutrons they possess.
4.Together, the number of protons and the number of neutrons determine an element’s mass number.
5.Since an element’s isotopes have slightly different mass numbers, the atomic mass is calculated by obtaining the mean of the mass numbers for its isotopes.
hey mate i hope this will help you
1.Neutral atoms of each element contain an equal number of protons and electrons.
2.The number of protons determines an element’s atomic number and is used to distinguish one element from another.
3.The number of neutrons is variable, resulting in isotopes, which are different forms of the same atom that vary only in the number of neutrons they possess.
4.Together, the number of protons and the number of neutrons determine an element’s mass number.
5.Since an element’s isotopes have slightly different mass numbers, the atomic mass is calculated by obtaining the mean of the mass numbers for its isotopes.
hey mate i hope this will help you
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