Ionic Vs Covalent bonds

I’m Bond. James Bond

Chemical Bonds attractive force between atoms or ions that binds them together as a unit atoms which are bonded together form compounds

Bonds Form…. To complete an octet, or full valence shell To makes atom stable by electrons being held between two nuclei, the degree of separation dictating the type of bond

If the electron is closer to the another atom’s nucleus than its own, it is ionic. Basically it gives the electron up to the other atom If the electron is closer to its own but still under the other nucleus influence it is covalent, meaning shared

Remember the periodic trend electronegativity? Electronegativity—attraction of nucleus to other electrons

Ionic bonds are formed from electrons transferring. Covalent bonds are formed from electrons sharing

Polar Bonds Dipoles – 2 opposite charges separated by a small distance (in this case the bond length) Ex. HCl H = 2.20 EN Cl = 2.83 EN 0.63 EN difference The Cl portion of the HCl molecule is slightly more negative (the electrons are more likely to be found closer to it because of higher EN) and therefore the bond is polar. H Cl

Ionic Compounds Form due to the electrostatic attractions between oppositely charged (+/-) ions. Metal + Nonmetal Crystalline solids (geometric pattern) Strong intercrystalline attractions Hard and brittle High melting and boiling points Dissolve in water

Ionic Bonding - Crystal Lattice Formula unit = empirical formula for ions Although the formula for salt is NaCl, you will never find one Na ion bonded to one Cl ion. How many Cl’s are bonded to each Na?

Covalent Compounds Form by the sharing of e- by two atoms; shared on overlapping orbitals Nonmetal + nonmetal Molecules Weak intermolecular forces (attractions) Often flexible or soft Low melting and boiling points