If you know the mass of one mole of those atoms (the mass number listed on the Periodic Table), then you divide that number by Avogadro's constant: 6.022x10^23 which gives you the mass of one single atom
The Atomic Mass can be calculated by adding the mass of protons, neutrons, and electrons. Electrons essentially have no mass, and protons and neutrons have an atomic mass of one. So looking at a common element of oxygen with 8 protons, 8 neutrons, and 8 electrons, we can find the atomic mass to be 16 (the number of protons plus the number of neutrons). An isotope of oxygen having 8 protons, 7 neutrons, and 8 electrons, would have an atomic mass of 15.
- take your average mass and round it, then take your atomic number and subtract it by your average mass. This will give you you atomic mass of an element. -
The mass of an atom is the sum of masses of neutrons, protons and electrons.
Neon is a non meta element. Atomic mass of it is 20.
Atomic mass of an element measures the mass of that element on a molecular scale, taking into account neutrons and protons, which weigh approximately 1. Electrons are negated. Atomic mass is also the mass, in grams, of 1 mole of that element.
Nitrogen, element 7, has an atomic mass of 14.0067, rounded to 14.007.
Mercury has an atomic mass of 200.
Vanadium is the element that has an atomic weight of 50.942.
To calculate the atomic mass of any element, add the no. of protons and neutrons. There sum will be the atomic mass. The mass of electrons is not counted towards the atomic mass.
To calculate the atomic mass of an element, add up the mass of protons and nuetrons.
Thalium is a meta element. Atomic mass of it is 204. Atomic number of it is 81.
You need to know the atomic # or the masses of each isotope of the element.
them mass number of an element is the total amount of nuetrons and protons in the element , and the atomic number is the amount of protons ( and electrons) in the element simply subtract the atomic number from the mass number and you'll have the number of neutrons in the element hope this helped x
The masses and relative abundances of all naturally occurring isotopes of the element are required to calculate average atomic mass of the element.
the atomic number of each isotope-apex;)
Number of neutrons = Atomic mass - Atomic number
For any element, subtract the atomic mass from the atomic number.
Number of protons
By taking the wieghted averages of naturally occurring isotopes of that element. :)
The atomic mass listed on most periodic tables is actually the average atomic mass representing the average atomic masses of the various isotopes of an element depending on their percent natural abundance. Refer to the answers.com question: What is the formula for finding average atomic mass? for a detailed explanation on how to calculate this value. (What_is_the_formula_for_finding_average_atomic_mass)