Atomic Mass

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

Using a Bainbridge mass spectrograph.

First of all, in these cases, we must thoroughly understand the cute differences between mass of atom, atomic mass, atomic weight, mass number, calculated mass and real mass.

Mass number, simply, is the total number of protons and neutrons (common name nucleon for proton and neutron) present in the nucleus of the atom.

Mass of the atom is the total mass of the nucleus and the mass of all the electrons.

But atomic mass is the total mass of the constituents of the atom namely protons, neutrons in the nucleus.

We calculate the mass of the core by getting the total mass of all the nucleons present in it.

Here we use a convenient unit for measuring mass. That one is known as atomic mass unit (amu) which equals to 1.66 x 10-27kg.

But the beauty is that this calculated mass is not found when we measure the mass of the nucleus by experimental means. The famous instrument to determine the mass of core accurately is a Bainbridge Mass Spectrograph.

The measured mass is slightly less than the calculated mass.

This is termed the mass defect. The equivalent energy to this mass defect is termed the binding energy of the nucleus.

Actually binding energy is that energy which has already come out when the protons and neutrons come together to form the nucleus hence the mass defect is the mass lost as heat energy.

More over there are four isotopes of copper having different number of neutrons in the nucleus. 34,35,36,37. The first and third are normal isotopes (non radioactive) but second and fourth are radio active. The isotopic mass of the isotope you have mentioned is measured as 64.9277 amu.

Each atom of an element isn't always exactly the same as another; some can have slightly more mass, and some can have slightly less than others. Atoms with different masses are called isotopes, and in any naturally-occurring sample you get a certain proportion of each isotope. Then the atomic mass is actually the mass of each isotope, multiplied by the proportion of that isotope you'd get in a sample, all added together.

For example, chlorine has two isotopes, chlorine-35 and chlorine-37, but in a natural sample you'd get 75% chlorine-35 and 25% chlorine-37. So chlorine's atomic mass is 35*75/100 + 37*25/100. If you work that out, you'll get 35.5, which is the figure on the periodic table.

Tritium, or Hydrogen 3, has an atomic mass of 3.016.

why would I know this sit would not give me the answer :[

The atomic mass of lithium is typically given with three significant figures, which are 6.94.

This is a homework assignment. It has been given to you to research and think out so that you will learn about and understand how the periodic table works.

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If however there is some specific question you do not understand relating to your research about the periodic table, WikiAnswers will be happy to answer this specific question.

Phosphorus is a meta element. Atomic mass of it is 31.

Atomic mass is defined as the sum of the no. of proton and neutron present in the nucleus of an atom and Atomic Number is defined as the no. of electrons present in the extra nuclear part of an atom .

BY; SHUBHAM KAKKAR

The atomic mass of an element represents the average mass of its isotopes, taking into account their abundance. It is the sum of the protons and neutrons in the nucleus of an atom. By subtracting the atomic number (number of protons) from the atomic mass, you can determine the number of neutrons in the nucleus.

The average atomic mass is the weighted average of the masses of all naturally occurring isotopes of an element, taking into account their abundance. The mass number, on the other hand, represents the total number of protons and neutrons in the nucleus of an atom, and it is a whole number.

Arsenic has an atomic mass of 74.9216 rounded to 74.922. It's chemical symbol is-As-and it's atomic number is 33.

The analysis of a sample of Martian air collected by the Phoenix Lander shows that the ratio of oxygen and carbon dioxide isotopes present in the atmosphere of Mars is very similar to that of Earth. Due to Mars' low gravity and lack of magnetic field, lighter isotopes are lost to space and so an older atmosphere will consist of mainly heavier isotopes.

In other words the oxygen on Mars would consist mainly of O18 while on Earth our oxygen consist mainly of O16.