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the mass number of an atom is the number of protons in an atom, plus the number of neutrons.
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Why are mass numbers whole numbers?
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.
What is density calculated by?
Density is calculated by dividing the mass and volume of an object.
What is it called when calculated by dividing mass by volume?
Density
Why mass number of are always whole number?
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.
How is density calculated from measured data?
mass/volume. most often represented as g/cm3
The number of neutrons in the nucleus of an atom can be calculated by what?
Subtracting the atomic number from the isotope mass number.
How are the numbers of neutrons calculated from the period table?
You can find the number of neutrons present in any individual element by subtracting the atomic number from the mass number.
Why are mass numbers whole numbers?
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.
What is delivered by adding the number of protons with the number of neutrons?
The Mass Number
Why do atomic mass numbers have decimals for oxygen?
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.
Is difference of mass number is calculated by electron microscope?
no, the mass spectrometer.
What information does the atomic mass of an elemt provide?
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
How do you get the mass number by adding neutrons and the atomic number?
mass number = number of protons + number of neutrons The atomic number is equivalent to number of protons.
How do you find the mass of an element?
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.
What is the relationship between mass number and atomic numbers?
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.
What does the formula atomic mass minus the atomic number equal?
By subtracting the mass number and the atomic number, the number of neutrons can be calculated.
How do you find the mass number on the periodic table for the elements are calculated?
The mass number is the number of protons plus the number of neutrons in the atomic nucleus.
