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The mass number indicates the sum of the number of protons and neutrons of the isotope. The mass number, nucleon number or atomic mass indicated about the respective chemical symbols in the Periodic Table are average figures based on the different isotopes and their relative abundance. That is why there are decimals in mass numbers in the periodic table. It can be used to compare the relative atomic masses of different atoms.

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The mass number represents the number of?

The mass number is the sum of the neutrons and protons which exist in the atomic nucleus of an isotope.


What number represents the protons and nuetrons?

The mass number


What does atomic mass number elements symbol elements name and atomic mass tell you about the element?

The element symbol represents one mole of element , atomic number represents number of protons, atomic mass represents sum of protons and neutrons.


Does mass number of an atom actually represents the mass of an atom?

The mass number is sum of neutrons and protons in the atomic nucleus.


What is a whole number which represents the total number of protons and neutrons?

This is the mass number.


What does the periodic number tell you about the element in the period?

The atomic number represents the number of protons. The atomic mass represents the number of protons + neutrons.


What does the number represent in platinum-195?

It represents the atomic number and atomic mass. Mass number is the superscript Atomic number is the subscript


What do you get if you subtract the atomic number from the mass number for a particular atom?

You get the number of neutrons in the atom. The mass number represents the total number of protons and neutrons in the nucleus, while the atomic number represents the number of protons. Subtracting the atomic number from the mass number gives you the number of neutrons because the difference accounts for the protons.


Consider the element Phosphorus 30P The number 30 represents the?

mass number


Could Defferentiate the mass number and atomic element?

The mass number represents the total number of protons and neutrons in an atom's nucleus. It determines the isotope of an element. The atomic number represents the number of protons in an atom's nucleus, defining the element and its unique properties on the periodic table.


What is the mass number of gold?

The mass number of gold is 197. This number represents the total number of protons and neutrons in the nucleus of a gold atom.


What is the mass number of the atom of argon?

The mass number of an atom of argon is 40. This number represents the total number of protons and neutrons in the nucleus of the argon atom.