the mass number of an atom is the number of protons in an atom, plus the number of neutrons.
mass numbers are whole numbers because the mass number is number of protons in an atom, plus the number of neutrons. you can only have a whole neutron and or proton, therefore, all mass numbers are whole numbers.
Density is calculated by dividing the mass and volume of an object.
Density
The main reason is that many elements exist in several isotopic forms. These are atoms with the same number of protons and electrons but different numbers of neutrons. Since the atomic mass is essentially based on the number of protons and neutrons in each atom, the element will exist in several forms with different masses. The atomic mass is the average of the masses of these isotopes, weighted together according to their abundance.
mass/volume. most often represented as g/cm3
Subtracting the atomic number from the isotope mass number.
You can find the number of neutrons present in any individual element by subtracting the atomic number from the mass number.
mass numbers are whole numbers because the mass number is number of protons in an atom, plus the number of neutrons. you can only have a whole neutron and or proton, therefore, all mass numbers are whole numbers.
The Mass Number
The mass number is the sum of protons and neutrons in the atomic nucleus of chemical elements. All mass numbers are integers. The atomic weight is not an an integer because is calculated taking in the account the isotopic composition of an element; also the mass excess has a role.
no, the mass spectrometer.
the number of protons and neutrons in an atom. Atomic mass is found by adding together the individual masses of the numbers of protons, neutrons, and electrons in the atom. --> Atomic Mass = protons + neutrons
mass number = number of protons + number of neutrons The atomic number is equivalent to number of protons.
Mass number..can be calculated..by the sum of No. of protons and the No. of electrons. And this would give you the the mass number of the element.
Atomic number is the number of protons in the nuclei of the atoms of an element. Each element has a unique atomic number. Mass number is the number of protons and neutrons in the nuclei of the atoms of a specific isotope of an element.
By subtracting the mass number and the atomic number, the number of neutrons can be calculated.
The mass number is the number of protons plus the number of neutrons in the atomic nucleus.