CHEMISTRY GLOSSARY
covalent compound → kovalentni spoj
Covalent compound is a compound made of molecules - not ions, such as H2O, CH4, Cl2. The atoms in the compound are bound together by shared electrons. Also called a molecular compound.
atom radius → radijus atoma
Atoms and molecules have no strict boundaries. The volume of a free atom is usually defined as that volume that contains 90 % of electron cloud. The radius of an atom represents half of interatom distance of two identical atoms which are in touch but are not interconnected either by a covalent or an ionic bond, but with a very weak van der Waals’s bond.
base → baza
Historically, base is a substance that yields an OH - ion when it dissociates in solution, resulting in a pH>7. In the Brønsted definition, a base is a substance capable of accepting a proton in any type of reaction. The more general definition, due to G.N. Lewis, classifies any chemical species capable of donating an electron pair as a base. Typically, bases are metal oxides, hydroxides, or compounds (such as ammonia) that give hydroxide ions in aqueous solution.
bidentate ligand → bidentatni ligand
Bidentate ligand is a ligand that has two "teeth" or atoms that coordinate directly to the central atom in a complex. An example of a bidentate ligand is ethylenediamine. A single molecule of ethylenediamine can form two bonds to a metal ion. The bonds form between the metal ion and the nitrogen atoms of ethylenediamine.
borane → borani
Borane is any of the group of compounds of boron and hydrogen (B2H6, B4H10, B5H9, B5H11...), many of which can be prepared by action of acid on magnesium boride (Mg3B2). Boranes are a remarkable group of compounds in that their structures cannot be described using the conventional two-electron covalent bond model.
isoelectronic → izoelektronske čestice
Isoelectronic refers to a group of atoms or ions having the same number of electrons. For example, F-, Ne, and Na+ are isoelectronics.
Lewis acid → Lewisova kiselina
Lewis acid is an agent capable of accepting a pair of electrons to form a coordinate bond.
Lewis base → Lewisova baza
Lewis base is an agent capable of donating a pair of electrons to form a coordinate bond.
Lewis, Gilbert N. → Lewis, Gilbert N.
Gilbert Newton Lewis (1875-1946) is an American chemist whose theory of the electron pair fostered understanding of the covalent bond and extended the concept of acids and bases.
Citing this page:
Generalic, Eni. "Elektronski afinitet." Croatian-English Chemistry Dictionary & Glossary. 29 June 2022. KTF-Split. {Date of access}. <https://glossary.periodni.com>.
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