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Only when the nuclei of the element contain no neutrons. This occurs naturally only for hydrogen-1.

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What is the difference between the atomic number and the atomic weight of the known elements as listed on the periodic table?

The atomic number of the element is the number of protons or number of electrons in an atom of the element . The atomic weight of the element is the ratio of the mass of the atom to the 1/12th of the mass of the atom of carbon 12.


What does the atomical number represent?

The Atomic Mass is the mass (weight) of the element measured in atomic mass units (AMU)


Which is the average of the mass number of an element isotpes?

The atomic weight or atomic mass.


How do you get the atomic number and weight?

The atomic number of an element is equal to the number of protons in its nucleus. The atomic weight is the average mass of an element's isotopes, taking into account their relative abundance. Both the atomic number and weight can be found on the periodic table for each element.


What is the atomic mass of an element the number?

We can find Atomic Mass and mass number in chemical elements. Atomic mass is about weight of the atom. Mass number is about total of neutrons and protons.


Does the number of protons in an atom of an element always equal its atomic weight?

atomic weight = mass of protons + mass of neutrons


Is atomic weight and mass number the same?

Mass number: sum of protons and electrons in the nucleus of an isotope. Atomic weight: mass of a chemical element expressed in unified atomic mass units.


How are the atomic mass and the atomic number different?

The atomic number represents the number of protons in an atom's nucleus, while the atomic mass is the sum of the number of protons and neutrons in the nucleus. Atomic number determines an element's identity, while atomic mass affects its atomic weight and isotopes.


What is the difference of a atomic number and atomic weight?

Atomic number is the number of a chemical element in the periodic table of Mendeleev; it is equal in the neutral state with the number of protons or electrons. Atomic weight is the mass of a chemical element (considering the isotopic composition) expressed in atomic mass units.


What does the atomic mass of an element tell?

The gram atomic weight or gram Atomic Mass of a chemical element is the mass in grams of Avogadro's number of atoms of the element with the isotopic proportions found in nature.


How can you get the mass number and atomic number of element?

The mass number of an element is equal to the sum of protons and neutrons in the nucleus, while the atomic number corresponds to the number of protons. These values can be found on the periodic table for each element.


What does the atomic weight mass number of an element represent?

The atomic weight, or atomic mass, of an element represents the average mass of its isotopes, weighted by their natural abundance. It is typically expressed in atomic mass units (amu) and reflects the total number of protons and neutrons in the atomic nucleus, which collectively define the mass number. While the mass number is a whole number indicating the total count of protons and neutrons in a specific isotope, the atomic weight accounts for the relative proportions of all isotopes of the element found in nature.