Atomic Mass

The mass number is the total amount of protons and neutrons in an atom (the number of protons is the same as the number of electrons) The atomic number is the number of protons (or electrons) in an atom. To find out the number of neutrons in an atom, you need to take the atomic number from the mass number An atom is normally written like this: Mass number Ca Atomic number The Mass number can be written as (A) and the atomic number can be writtens as (Z)

This atom has three neutrons. The atomic mass number is the sum of the protons and neutrons. All atoms of the same element have the same number of protons (lithium has three), so the neutrons have to account for the rest of the mass. 6 (the mass number)-3 (the number of protons in a lithium atom)=3. So this atom must have three neutrons.

Either a proton or neutron has an atomic mass of 1. An electron's mass is actually extremely small in comparison. The majority of the weight of an atom is in the nucleus.

The atomic mass of manganese (Mn) is approximately 54.94 atomic mass units.

Well, this is not exact, but smaller atoms have about the same number (and mass) of neutrons and of protons. Heavier atoms have a larger percentage of their mass in neutrons.

Well, this is not exact, but smaller atoms have about the same number (and mass) of neutrons and of protons. Heavier atoms have a larger percentage of their mass in neutrons.

Well, this is not exact, but smaller atoms have about the same number (and mass) of neutrons and of protons. Heavier atoms have a larger percentage of their mass in neutrons.

Well, this is not exact, but smaller atoms have about the same number (and mass) of neutrons and of protons. Heavier atoms have a larger percentage of their mass in neutrons.

There is no atomic mass - sulfate is a polyatomic ion. The molecular mass, however, is 80.1 g/mole.

The atomic mass of an element is the sum of the number of protons and neutrons in the nucleus of an atom. In this case, the element has 7 protons and 8 neutrons, so the atomic mass would be 7 + 8 = 15 atomic mass units.

The most abundant isotope of element X is X-17 because its atomic mass is closest to the average atomic mass of 17.9994. This means that X-17 is more abundant than X-16 and X-18 in nature.

the element that has an atomic mass of 16.00 is sulfer.

The atomic mass of iodine is about 126.9 g/mol, which is indeed less than the atomic mass of many other elements. This low atomic mass for iodine is due to its position in the periodic table and the number of protons and neutrons in its nucleus.

Atomic mass of an element is measured in atomic mass units (amu), and is usually only slightly higher than its atomic mass number (except for elements having many different isotopes). The mass of a neutron is 1.00866 amu and the mass of a proton is 1.00728 amu. The mass of electrons is so insignificant that they are ignored. The atomic mass of an atom with 56 neutrons and 43 protons is (56 x 1.00866 amu) + (43 x 1.00728 amu) = ~99.8 amu.

The atomic mass of chloride is approximately 35.45 grams per mole.

To find the proportion of N in Ca3N2, we calculate the total atomic mass of N in the compound which is 2 * 14 = 28 (since there are 2 nitrogen atoms in Ca3N2). The total atomic mass of Ca3N2 is 3 * 40 + 2 * 14 = 136. Therefore, the proportion of N in Ca3N2 by mass is 28/136 = 0.206 (or 20.6%).

The only way is to look it up. The isotopic ratio can be determined on a mass spectrometer. Most periodic tables will have the atomic mass otherwise Google the element the wikipedia article will have the average mass of the element listed there. A few elements like Lead do have differing isotopic ratios depending where it was mined.

Chromium is a meta element. Atomic mass of it is 27.

4.002 is the atomic mass of helium, element number 2 on the periodic table. It is a light, colorless, odorless gas that is the second most abundant element in the universe. Helium is commonly used in balloons and cryogenics due to its low boiling point.

Carbon 12 isotope weighs exactly 12 atomic mass units thank you the other person who said it was B is a douche

Mass of Carbon-12 = 12 amu

5times of mass of Carbon-12 atom = 5 x 12 = 60 amu

So atomic mass of element X = 60 amu

Rachel- www.examville.com ,tutor

The weight of a football is a non-example of atomic mass. Atomic mass refers to the average mass of an atom of a chemical element, while the weight of a football is a measure of the force of gravity acting on the football due to its mass.

Beta decay decreases atomic mass by 1. In beta decay, a neutron in the nucleus is converted into a proton, releasing a beta particle (an electron) and an antineutrino. This results in an increase of the atomic number by 1, while the atomic mass remains the same.

Iron (Fe) has an atomic mass of 55.8.

The atomic mass may be considered to be the total mass of protons, neutrons and electrons in a single atom (when the atom is motionless). Relative isotopic mass is the relative mass of a given isotope scaled with carbon-12 as exactly 12.

Silicone is a non meta element. Atomic mass of it is 28.

There are 5 stable isotopes of Titanium, having mass numbers: 46, 47, 48, 49, 50. The measured masses are: 45.99695, 46.99650, 47.96312, 48.96339, 49.96058 respectively. The averaged mass of natural Titanium is: 47.890