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A (disambiguation) and Mass number

Shortcuts: Differences, Similarities, Jaccard Similarity Coefficient, References.

Difference between A (disambiguation) and Mass number

A (disambiguation) vs. Mass number

A is the first letter of the Latin alphabet. The mass number (symbol A, from the German word Atomgewichte (atomic weight), also called atomic mass number or nucleon number, is the total number of protons and neutrons (together known as nucleons) in an atomic nucleus. It determines the atomic mass of atoms. Because protons and neutrons both are baryons, the mass number A is identical with the baryon number B as of the nucleus as of the whole atom or ion. The mass number is different for each different isotope of a chemical element. This is not the same as the atomic number (Z) which denotes the number of protons in a nucleus, and thus uniquely identifies an element. Hence, the difference between the mass number and the atomic number gives the number of neutrons (N) in a given nucleus:. The mass number is written either after the element name or as a superscript to the left of an element's symbol. For example, the most common isotope of carbon is carbon-12, or, which has 6 protons and 6 neutrons. The full isotope symbol would also have the atomic number (Z) as a subscript to the left of the element symbol directly below the mass number:. This is technically redundant, as each element is defined by its atomic number, so it is often omitted.

Similarities between A (disambiguation) and Mass number

A (disambiguation) and Mass number have 1 thing in common (in Unionpedia): Relative atomic mass.

Relative atomic mass

Relative atomic mass (symbol: A) or atomic weight is a dimensionless physical quantity defined as the ratio of the average mass of atoms of a chemical element in a given sample to one unified atomic mass unit.

A (disambiguation) and Relative atomic mass · Mass number and Relative atomic mass · See more »

The list above answers the following questions

A (disambiguation) and Mass number Comparison

A (disambiguation) has 142 relations, while Mass number has 41. As they have in common 1, the Jaccard index is 0.55% = 1 / (142 + 41).

References

This article shows the relationship between A (disambiguation) and Mass number. To access each article from which the information was extracted, please visit:

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