## Atomic Mass

Atomic mass is the mass of protons, neutrons, and electrons in a single specific atom.
To calculate the relative atomic mass of an element (which is by  its definition an average), you need the mass number and relative  abundance of each isotope present.   Suppose we have the following data from the mass spectrometer:   first isotope mn X, abundance A%   second isotope mn Y...
it tells the weight of ine atom in the element
The atomic mass unit (amu), or Dalton (Da) or, sometimes, universal  mass unit, is a unit of mass used to express atomic and molecular  masses. It is the approximate mass of a hydrogen atom, a proton, or  a neutron.   . 1 u = 1/NA gram = 1/ (1000 NA) kg (where NA is Avogadro's number)  1 u =...
all you need to know is how many protons and neutrons are in the atom.
If you look on a periodic table under the element tungsten which is represented as W, you will find the atomic mass on the top right side. It's average weight is 183.84 and the atomic number of 74
7 neutrons + 8 protons = mass number of 15
50 because 89(the atomic number, which is the amount of protons+the amount of neutrons)-39(the amount of protons) is 50
It's not just an element, it's a particular isotope of a particular element. The currently accepted standard is carbon-12, which by definition has a mass of precisely 12 atomic mass units when at rest, isolated, and in its nuclear and electronic ground states. Before 1961, the scale was based on...
The decimal is the average atomic mass of an element. Each element has a set of isotopes which have different numbers of neutrons and therefore different atomic masses. For example there are 3 isotopes of carbon. with masses of 12, 13 and 14, though carbon-12 is the most common by far. But because...
atomic mass is the average relative mass (average mass of all the possible isotopes) mass number is the number of protons plus neutrons in an atom atomic number is the number of protons in the element.
The atomic number tells you the number of protons and electrons.p.s. Subtract the atomic number from the atomic mass, and you will get neutrons.
The atomic mass of an element is the numerical average of all the masses of the naturally occurring isotopes of that element proportionately. Man made elements do not count in supposedly.IE: If we have an element with atomic weight 100 and we have an isotope of that element with atomic weight 102...
Im not sure about the atomic mass bit but Lanthanum is a silvery white, malleable, ductile, and soft rare-earth metal xx
Each element on the periodic table has two numbers: the atomic number and the relative atomic mass. The atomic number is the number of protons in the nucleus, and the relative atomic mass is the total number of protons and neutrons (so the difference between them is the number of neutrons). The...
2. The electron configuration for Mg is 1s2 2s2 2p6 3s2. Magnesium has two s orbital electrons in its third energy shell.
Magnesium is a meta element. Atomic mass of it is 24. Atomic number  of it is 12.
Manganese is a metal element. Atomic mass of it is 54.93.
Among these three elements, Cl has the greatest mass, as can be seen from any periodic table or other reference work that shows atomic masses.
Because electrons make up around 0.0005% of the mass of any given atom, usually a lot less. Because most masses are only given to about the fifth significant figure (and even then, only sometimes) the electrons' masses do not make enough of a difference to matter.
To find the number of protons given this information, take the number of neutrons away from the atomic mass. 24-12 = 12 protons.
Silicone has that atomic mass. Atomic mass number is 28.
The total mass of protons and neutrons in the nucleus was traditionally called the 'Atomic weight', but in more recent times the term 'Relative Atomic Mass' has been used instead. This is really a better term as the mass is relative, and not an actual weight in terms of a weight unit like grams. ...
atomic mass unit (short: a.m.u.), symbol 'u', equiv. with (in S.I. units) 1.66054*10-27 kg
the 2kg is closest to 2020g because it is the only number that can work for this answer.
It's an average number allowing for the relative abundances of  different isotopes.
  The atomic mass of Cobalt is 58.93
Lead's atomic mass is 207.2 Its atomic number is 82
Yes, the farther right and down you go, the heavier the elementRevised answer: If your emphasis is on "group", the modern periodic table groups elements by similar electronic structure, and similar chemical behaviour.
Alcohol does not have an atomic number because it is not an  element. Its molar mass is 46.07 g mol−1.
  the atomic mass of zinc is 65.390000
Mass Number = the number of protons and neutrons in a normal atom of the element. Atomic Mass = the actual mass of the atom, measured in grams
All metals only can loose some electrons, which is only ONE in the case of potassium. Electron configuration of K: 19 in total, (K,L,M,N orbits) => 2, 8, 8, 1 resp. in each orbit. K ==> K+ + e- This is the preferred (thus more stable) electron configuration of the K+ion: 18 in total, (K,L,M...
  ytterbium has 70 protons.
Atomic mass is the total mass of protons, neutrons and electrons in a single atom.
Basic arithmetic (5+6) suggests that the atomic mass is eleven.
To three significant figures, the mass of arsenic is 74.922
the atomic mass is how much an element weighs
The atomic mass of an atom is the total mass of its particles. The atomic number is the number of protons in the atom's nucleus. To find the number of neutrons in an atom, we take its atomic mass (the total mass of its particles) and subtract its atomic number (the number of protons and electrons...
Iodine is a non meta element. Atomic mass of it is 127. Atomic  number of it is 53.
Helium (symbol: He) with an atomic mass of 4.0026
The atomic mass number must be higher as that represent the number of protons and neutrons in an element. Whereas only the number of protons are represented in the Atomic Number.
the number of protons plus neutrons.
The elements in each column of the periodic table have the same number of valence electrons. None of the other characteristics listed in the question is common to all these elements.
  I want to know what the atomic mass of tellurium is.........   It has not answered my question and I would like to know the answer....
Atomic mass is a measure of mass, just like kilos and pounds. There are at least 118 different basic atoms in the universe, all with different masses. The atomic mass of an atom is roughly the combined amount of protons and neutrons in it's core. For example: The atomic mass of a standard Oxygen...
No. That would require having a non-integer number of protons in the nucleus, which is impossible.
Rn has 86 electrons, Th is the closest to having an atomic mass of 230
The element with an atomic mass of 16 is Oxygen(O).
kripton is a metal element. Atomic mass of it is 83.80.
The element Sodium (Na) has atomic mass 23.  
The atomic mass number is always the sum of the numbers of protons and neutrons. In this instance, 16.
I think you are asking for the mass of 0.35 moles of methane (CH4). First, we find the molecular mass of methane by addin the masses of all of the atoms. A carbon is 12, and each H is 1, so the molecular mass of CH4 is 16g/mole.Now we multiply 0.35 moles by 16 g/mole. The moles cancel out, and we...
The Atomic Mass of krypton is 83.80(1) if you round 84
  == Answer ==   The nucleus of boron-11 contains 5 protons and 6 neutrons. 
The mass is   0.330 mol Ca (40.08 g/mol) = 13.2 g Ca
  it depends because isotopes have different nucleon numbers but their atomic number stays the same.