BRAINCAKEBonding
Revision notes for Bonding in Edexcel Chemistry (8CH0). Read the start of any lesson here, then sign in free for the whole lesson, the R.E.C.I.P.E. recall steps and the quiz.
- Metallic BondingThe outer shell electrons of metals have low ionisation energies.
- Physical Properties of MetalsAll metals are solid at room temperature with the exception of mercury.
- Ionic BondingIonic bonding is the electrostatic attraction between oppositely charged ions.
- The Strength of Ionic BondsThe strength of an ionic bond depends on the size of the ions and the charge on the ions.
- Trends in Ionic RadiiThere are large uncertainties in the measurement of ionic radii.
- Physical Properties of Ionic CompoundsIonic compounds have high melting temperatures.
- Formation of IonsIonic bonding takes place between metals and non-metals.
- Evidence for the Existence of IonsEvidence for ions is electrolysis.
- Covalent BondsA covalent bond is the electrostatic attraction between two nuclei and a shared pair of electrons.
- π-bondsπ bonds arise from the sideways overlap of 2 atomic p-orbitals. π bonds cannot form until sigma bonds are formed so lead to the formation of double…
- Bond Length and Bond StrengthThe strength of a covalent bond is measured by the amount of energy needed to break the bond or the bond enthalpy.
- ElectronegativityElectronegativity is the ability of an atom to attract a bonding pair of electrons.
- Distribution of Electron DensityIf covalently bonded atoms have different electronegativities the distribution of electron density will be more towards the more electronegative…
- Polar Covalent BondsIf covalently bonded atoms have different electronegativities the distribution of electron density will be more towards the more electronegative…
- Continuum of Bonding TypeThere is a continuum of bonding type from pure ionic e.g.