Many stable atoms have ‘magic numbers’ of protons and neutrons − 75 years ago, 2 physicists discovered their special properties
One class of elements ... gases hold onto their electrons. The magic numbers known to scientists are 2, 8, 20, 28, 50, 82 and ...
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Lesson 4.1: Protons, Neutrons, and Electrons
A hydrogen atom has one proton as the nucleus and one electron in the region ... When the plastic strip is rubbed on the skin, electrons from the skin are transferred to the plastic giving the plastic ...
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Nuclear model of the atom
They have a radius of around 1 ... an element that have the same number of protons but different numbers of neutrons. There are three isotopes of hydrogen: hydrogen, deuterium (hydrogen-2) and ...
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Lesson 4.4: Energy Levels, Electrons, and Covalent Bonding
When two hydrogen atoms get close enough, the electron from each atom feels an attraction from the proton in the other atom's nucleus. This attraction pulls the atoms together. The electrons end up ...
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Atomic number and mass number
The proton number (Z) of an atom is the number of protons it contains. All the atoms of a particular element have the same proton number (number of protons). The atoms of different elements have ...
Two physicists discovered special properties of stable atoms with 'magic numbers' of protons and neutrons 75 years ago
One class of elements ... gases hold onto their electrons. The magic numbers known to scientists are 2, 8, 20, 28, 50, 82 and ...