Bonding Flashcards
why do atoms bond to each other?
In order to gain more stability
aiming for full valence shells
wen bonds form - the valence electrons are redistributed between the different atoms so that all the atoms get a full valence shell
outline the octet rule
The octet rule states when an atom forms a chemical bond by losing, gaining or sharing valence electrons, its electronic configuration becomes the same as that of a noble gas
Chemical bond definition
Is a strong attractive force between atoms or ions in any given compound
Definition of a cation
Atom loses one electrons, cations are positive in charge
Metals=Cations
Definition of an Anion
Atom gains one electrons, Anions are negative in charge
Non metal= anions
suggest the duet rule
Each hydrogen atom would then have 2 electrons in its valence orbitals
suggest the octet rule
Each atom would then have 8 electrons in is valence orbitals
Electronegativity
The relative capability of Ana tom to attract a shared pair of electrons
Ionic Bond
The electrostatic attraction between ions of opposite charge
Covalent Bond
Bonding between two or more non metal electrons - attempting to obtain a stable octet of electrons at least part of the time
Intramolecular forces
Forces the hold atoms together within a molecule
Intermolecular forces
Forces that exist between molecules
what is the scales of electronegativity measured on
0.7 to 4.0
Non polar covalent bont
When atoms share an equal number of electrons, a non polar covalent bond is formed
Polar covalent bond
In a polar covalent bond, two atoms share a pair of electrons unequally because of differences in their electronegativities
How is perfect Covalent bonding obtained
Obtained with two atoms with the same elctronegativity values
or any of the diatomic Elemental gases
how is polar covalent bond obtained
Obtained when two atoms of different electronegativity values bond together
remember these will both be non metalic elements
