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A trion is a bound state of three charged particles. A negatively charged trion in crystals consists of two electrons and one hole, while a positively charged trion consists of two holes and one electron. The binding energy of a trion is largely determined by the exchange interaction between the two electrons (holes).
, negatively charged (containing a strange quark and an up antiquark) has mass 493.677 ± 0.013 MeV and mean lifetime (1.2380 ± 0.0020) × 10 −8 s. K + ( antiparticle of above) positively charged (containing an up quark and a strange antiquark ) must (by CPT invariance ) have mass and lifetime equal to that of
The incidence of positively charged ions (cations, oxycations and hydroxycations) and negatively charged ions (anions, oyxanions and hydroxyanions) in each block of the periodic table shows a left to right decline of positively charged ions and increase in negatively charged species, This pattern is consistent with a left to right progression ...
An atom consists of a small, heavy nucleus surrounded by a relatively large, light cloud of electrons. An atomic nucleus consists of 1 or more protons and 0 or more neutrons. Protons and neutrons are, in turn, made of quarks. Each type of atom corresponds to a specific chemical element. To date, 118 elements have been discovered or created.
In physics, a charged particle is a particle with an electric charge. For example, some elementary particles, like the electron or quarks are charged. [1] Some composite particles like protons are charged particles. An ion, such as a molecule or atom with a surplus or deficit of electrons relative to protons are also charged particles.
Charges that are positive are called cations. Charges that are negative are called anions. Elements in the same group have the same charge. A group in the periodic table is a term used to represent the vertical columns. The noble gases of the periodic table do not have a charge because they are nonreactive. Noble gases are considered stable ...
A chemical element, often simply called an element, is a type of atom which has a specific number of protons in its atomic nucleus (i.e., a specific atomic number, or Z). [ 1 ] The definitive visualisation of all 118 elements is the periodic table of the elements , whose history along the principles of the periodic law was one of the founding ...
A hadronic atom is an atom in which one or more of the orbital electrons are replaced by a negatively charged hadron. [8] Possible hadrons include mesons such as the pion or kaon, yielding a pionic atom [9] or a kaonic atom (see Kaonic hydrogen), collectively called mesonic atoms; antiprotons, yielding an antiprotonic atom; and the Σ −