Definition, Betydelse, Synonymer & Anagram | Engelska ordet VALENCE

Definition av VALENCE

1. vanlig stavningsvariant av valance
2. (lingvistik) valens
3. (kemi) valens

Exempel på hur man kan använda VALENCE i en mening

• For light atoms (Z<12), this energy is most often transferred to a valence electron which is subsequently ejected from the atom.
• As the lightest element of the boron group it has three valence electrons for forming covalent bonds, resulting in many compounds such as boric acid, the mineral sodium borate, and the ultra-hard crystals of boron carbide and boron nitride.
• In particle physics, a baryon is a type of composite subatomic particle that contains an odd number of valence quarks, conventionally three.
• It is nonmetallic and tetravalent—meaning that its atoms are able to form up to four covalent bonds due to its valence shell exhibiting 4 electrons.
• An atom's electronegativity is affected by both its atomic number and the distance at which its valence electrons reside from the charged nucleus.
• In chemistry, electron counting is a formalism for assigning a number of valence electrons to individual atoms in a molecule.
• When multiple atoms combine chemically into a molecule by forming a valence chemical bond, the electrons' locations are determined by the molecule as a whole, so the atomic orbitals combine to form molecular orbitals.
• In the periodic table, potassium is one of the alkali metals, all of which have a single valence electron in the outer electron shell, which is easily removed to create an ion with a positive charge (which combines with anions to form salts).
• Theoretical chemistry is the branch of chemistry which develops theoretical generalizations that are part of the theoretical arsenal of modern chemistry: for example, the concepts of chemical bonding, chemical reaction, valence, the surface of potential energy, molecular orbitals, orbital interactions, and molecule activation.
• Octet rule, chemical theory stating that atoms tend to combine so they each have eight valence electrons.
• Specifically, when the photon hits electrons, it releases loosely bound electrons from the outer valence shells of atoms or molecules.
• He used the Periodic Law not only to correct the then-accepted properties of some known elements, such as the valence and atomic weight of uranium, but also to predict the properties of three elements that were yet to be discovered (germanium, gallium and scandium).
• The group is also known as the tetrels (from the Greek word tetra, which means four), stemming from the Roman numeral IV in the group name, or (not coincidentally) from the fact that these elements have four valence electrons (see below).
• In graphs of the electronic band structure of solids, the band gap refers to the energy difference (often expressed in electronvolts) between the top of the valence band and the bottom of the conduction band in insulators and semiconductors.
• Contrariwise, the six elements from gallium to krypton are the heaviest where all electron shells below the valence shell are filled completely.
• In group 18, the valence shell is full, meaning that added electrons are unstable, tending to be ejected very quickly.

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