Atomic number is the number of protons in the nucleus of the atom.
But Atomic Mass is the mass of the nucleus and mass of the electrons around the nucleus.
If suppose we say the mass number then it is the total number of protons and neutrons in the nucleus.
Nucleon is the common name for both proton and neutron. Hence mass number is the total number of nucleons.
Describe the reactivity of halogens
Describe the reactivity of halogens
Calcium-40: The atomic number of calcium is 20 and the number of neutrons is always the difference between the atomic mass and the atomic number.
Nothing, it's the same thing.
The atomic number represents the number of protons in an atom's nucleus, determining its chemical properties and element identity. Atomic mass is the total mass of an atom, which includes the sum of its protons, neutrons, and electrons.
All isotopes of an element have the same number of protons in the atomic nucleus, which is its atomic number on the periodic table. All isotopes of an element contain different numbers of neutrons in their atomic nuclei, which causes the isotopes of an element to vary in mass number (protons + neutrons).
The atomic mass number must be higher as that represent the number of protons and neutrons in an element. Whereas only the number of protons are represented in the Atomic Number.
We make atomic number by number of protons in a atom. We make mass number by total of both protons and neutrons.
Atomic mass number is the average atomic mass for that element, which is : All the isotopes' masses known for that element averaged up. Atomic number is the element's "identity", the number of protons the element and all its isotopes have. All the isotopes of a given element will have different number of electrons and neutrons, but the protons of the element never will change.
Atomic number 27 : Cobalt Atomic number 28 : Nickel Atomic number 29 : Copper Atomic number 30 : Zinc Atomic number 31 : Gallium
It is equal to the difference between atomic number and Atomic Mass number. A+
Atomic Mass is the average of the masses of the existing isotopes in an element, but the mass number is the sum of the protons and neutrons in the nucleus of an atom.