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Atomic Notation
By Gerard Santiago
Atomic notation is a way to represent an element by showing its mass number and atomic number. It is also called “Nuclear notation” or “Nuclear Symbol”.
The symbol of the element is accompanied by two numbers to the left of it ,one on the top and one on the bottom The top number is the mass number which is the number of neutrons and number protons added together.
While the number on the bottom is the atomic number, or the number of protons (and number of electrons in a neutral atom).
By Gerard Santiago
Atomic notation is a way to represent an element by showing its mass number and atomic number. It is also called “Nuclear notation” or “Nuclear Symbol”.
The symbol of the element is accompanied by two numbers to the left of it ,one on the top and one on the bottom The top number is the mass number which is the number of neutrons and number protons added together.
While the number on the bottom is the atomic number, or the number of protons (and number of electrons in a neutral atom).
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The isotopes of Hydrogen, the elements are determined by the atomic number 1.
The common isotope are Protium,
with Deuterium, and Tritium as another stable isotope which
makes up about 1%. Of Hydrogen
The common isotope are Protium,
with Deuterium, and Tritium as another stable isotope which
makes up about 1%. Of Hydrogen
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Isobars are atoms (nuclides) of different chemical elements that have the same number of nucleons. Correspondingly, isobars differ in atomic number (or number of protons) but have the same mass number. An example of a series of isobars would be 40S, 40Cl, 40Ar, 40K, and 40Ca. The nuclei of these nuclides all contain 40 nucleons; however, they contain varying numbers of protons and neutrons.
The term "isobars" (originally "isobares") for nuclides was suggested by Alfred Walter Stewart in 1918. It is derived from the Greek word isos, meaning "equal" and baros, meaning "weight".
The term "isobars" (originally "isobares") for nuclides was suggested by Alfred Walter Stewart in 1918. It is derived from the Greek word isos, meaning "equal" and baros, meaning "weight".
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Two nuclides are isotones if they have the very same neutron number N, but different proton number Z. For example, boron-12 and carbon-13 nuclei both contain 7 neutrons, and so are isotones. Similarly, 36S, 37Cl, 38Ar, 39K, and 40Ca nuclei are all isotones of 20 because they all contain 20 neutrons. Despite its similarity to the Greek for "same stretching", the term was formed by the German physicist K. Guggenheimer by replacing the "p" in "isotope" with "n" for "neutron".