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the mass of an atom of a chemical element expressed in atomic mass units. It is approximately equivalent to the number of protons and neutrons in the atom (the mass number) or to the average number allowing for the relative abundances of different isotopes.
Wiki User
∙ 8y ago
Wiki User
∙ 12y agoThe expression atomic mass is correctly used only for the masses of isotopes.
The Atomic Mass (and the atomic weight for elements) are mentioned in "unified atomic mass units" - this unit is 1/12 from the mass of the isotope 12C (with the atomic mass exactly 12).
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How did Mendeleev arrange atoms in the periodic?
Atomic Mass
What are the atomic number and mass of the animals?
Animals are not atoms and have neither an atomic number nor an atomic mass.
What is an amu and does it relate to atoms?
AMU stands for atomic mass unit. 1 amu is 1.66053892 times 10 up to the negative 27 kilograms.
What does Bohrs diagram represent?
it represents where the atoms, protons, Atomic Mass, atomic number, and electrons where they are located on the nucleus.
Why does not atomic mass of element represent the actual mass of the atoms?
Because the gram atomic mass of an element is the mass in grams of Avogadro's Number of atoms. To find the actual mass of a single atom, the gram atomic mass must therefore be divided by 6.022 X 1023.
How did Mendeleev arrange atoms in the periodic?
Atomic Mass
What will always be different in the isotops of atoms?
Atomic Mass
What has an atomic mass?
Atoms.
What has more mass 100 hydrogen atoms 4 sulfur atoms or 1 lanthanum atom?
100 Hydrogen atoms have an atomic mass of 100.794, 4 Sulfur atoms have an atomic mass of 128.26, and 1 Lanthanum atom has an atomic mass of 138.90547.
What are the atomic number and mass of the animals?
Animals are not atoms and have neither an atomic number nor an atomic mass.
What is the difference in molar mass and atomic mass?
molar mass is the actual mass of the one atom but relative mass is the average isotopes of the atoms.------------------------------------------Atomic mass is the mass of an isotope, expressed in atomic mass units.Molar mass is the mass of molecule, calculated from the atomic weights of the contained chemical atoms, expressed in grams.
How are atomic number and atomic mass alike?
Atomic number and atomic mass are not alike. Atomic number is the number of protons in the nuclei of the atoms of an element. Each element has a unique atomic number. Atomic mass is the combined masses of the protons, neutrons, and electrons of the atoms of an element. Individual isotopes of an element have specific mass numbers, which are the sum of the protons and neutrons in the nuclei of the atoms of the isotope.
What is an amu and does it relate to atoms?
AMU stands for atomic mass unit. 1 amu is 1.66053892 times 10 up to the negative 27 kilograms.
What is the average mass atomic mass of chlorine atoms?
35.45
The atomic mass of an atom is the?
The atomic mass of an atom is the mass of 6.011 X 10^23 atoms of that element.
What is the difference between atomic mass an molecular mass?
Atomic mass is defined for atoms. Molecular mass is defined for molecules or compounds. Atoms bond with each other to form compounds.
What are is the atomic mass of salts atoms?
The atomic weight (not mass) of sodium is: 22,989 769 28.The atomic weight (not mass) of chlorine is: 35,45.
