Hydrogen Bonds
Intra-molecular bonding ocuurs between atoms of the single large molecule ,where the inter-molecular bonding occurs between molecules ..
The bonding in transition metals involves both a "covalent" contribution and a metallic "cloud of electrons bond. Alkali metals just have the cloud of electrons to hold them together- hence softer and lower melting.
Bonding is essentially electrostatic attraction between ions.
Covalent bonding occurs between the nucelotides between the phosphate, deoxyribose sugar and organic base of a single DNA strand and hydrogen bonding holds the complementary bases of two DNA strands together.
between metals
Intra-molecular bonding ocuurs between atoms of the single large molecule ,where the inter-molecular bonding occurs between molecules ..
Ionic bonding occurs between a metal and a nonmetal whereas covalent bonding occurs between two nonmetals.
The bonding in transition metals involves both a "covalent" contribution and a metallic "cloud of electrons bond. Alkali metals just have the cloud of electrons to hold them together- hence softer and lower melting.
Covalent bonding
Bonding is essentially electrostatic attraction between ions.
Covalent bonding occurs between the nucelotides between the phosphate, deoxyribose sugar and organic base of a single DNA strand and hydrogen bonding holds the complementary bases of two DNA strands together.
There are two basic types of chemical bonding: Ionic bonding and Covalent bonding. Ionic bonding occurs between a metal and a non-metal (i.e. Na + Cl --> NaCl) Covalent bonding occurs between two non-metals (i.e. H2 + O2 --> 2H2O)
between metals
Metallic bonding occurs within solid pieces of copper and between individual atoms of copper in such objects.
ionic bonding
hydrogen bonds
Hydrogen bonding occurs between adjacent water molecules. This is a strong intermolecular force. Water hence requires a lot of energy to change from a liquid to a gas. The evaporation of water hence has a cooling effect as a small amount of water requires a lot of energy to evaporate, removing heat in the process.