Karteikarten
Electrons, Bonding and Structure
Karten in diesem Stapel (29)
- 1Define lone pairis an outer-shell pair of electrons that are not involved in chemical bonding
- 2Define giant covalent latticea 3D structure of atoms, bonded together by strong covalent bonds
- 3Define simple molecular latticea 3D structure of molecules bonded together by weak intermolecular forces
- 4Define giant metallic latticeis a 3D structure of positive ions and delocalised electrons, bonded together by strong metallic bonds
- 5Define delocalised electronselectrons shared between more than two atoms
- 6Define metallic bondingelectrostatic attraction between positive metal ions and delocalised electrons
- 7Define hydrogen bonda strong dipole-dipole attractoin between an electon deficient hydrogen atom on one molecule and a loe pair of electrons on a highly electronegative atom on a different molecule
- 8Define van der Waals' forcesarractive forces between induced dipoles in neighbouring molecules
- 9Define permanent dipole-dipole forcea weak attractive force between permanent dipoles in neighbouring polar molecules
- 10Define intermolecular forcean attractive force between neighbouring molecules
- 11Define polar moleculehas an overall dipole when you take into account any dipoles across the bonds
- 12Define polar covalent bondhas a permanent dipole
- 13Define permanent dipolea small charge difference across a bond that results from a difference in electronegativites of the bonded atoms
- 14Define electronegativitya measure of the attraction of a bonded atom for the pair of electrons in a covalent bond
- 15Define dative covalent bond(or coordinate bond) is a shared pair of electrons which has been provided by one of the bonding atoms only
- 16Define first ionisation energythe energy required to remove the first electron from each atom in one mole of gaseous atom to form one mole of gaseous 1+ ions
- 17Define covalent bonda bond formed by a shared pair of electrons
- 18Define groupa vertical column in the Period Table. Elements have similar properties and their atoms have the same number of outer-shell electrons
- 19Define giant ionic latticea 3D structure of oppositely charged ions held together by strong ionic bonds
- 20Define ionic bondthe electrostatic attraction between oppositely charged ions
- 21Define compounda substance formed from two or more chemically bonded elements in a fixed ratio, usually shown by a chemical formula
- 22Define electron configurationthe arrangement of electrons in an atom
- 23Define sub-shella group of the same type of atomic orbitals
- 24Define atomic orbitala region within an atom that can hold up to two electrons with opposite spins
- 25Define principal quantum numbera number representing the relative overall energy of each orbital, which increases with distance from the nucleus
- 26Define shella group of atomic orbitals with the same prinicipal quantum number
- 27Define second ionisation energythe energy required to remove one electron from each ion in one mole of gaseous 1+ ions to form one mole of gaseous 2+ ions
- 28Define successive ionisation energiesa measure of energy required to remove each electron in turn
- 29Define electron shieldingthe repulsion between electrons in different inner shells. Shielding reduces the net attractive force from the positive nucleus on the outer-shell electrons
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- Beschreibung
- Undergraduate Chemistry - Part 1 (Electrons, Bonding and Structure) Karteikarten am Electrons, Bonding and Structure, erstellt von siobhan.quirk am 12/05/2013.
- Erstellt von
- siobhan.quirk · Mai 2013
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- 24 Nov 2016
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