Oxyanions such as sulfate, phosphate and permanganate, any alkene, oxygen molecule are some of the examples for compounds which have double bonds in them.
Two pi bonds and one sigma bond.
Atoms share electrons in covalent bonds.
Sodium chloride has ionic bonds.
An example of a compound that contains both ionic and covalent bonds is ammonium chloride (NH4Cl). In this compound, the bond between the ammonium ion (NH4+) and the chloride ion (Cl-) is ionic, while the bonds within the ammonium ion itself (N–H) are covalent.
Animo acids
Sharing of electrons. Generally this involves pirs of electrons forming bonds.
convalent bonds have the greatet bond energy.
Animo acids
Convalent bonds
Convalent bonds (atoms all sharing their electrons), metallic bonds (a rigid crystal lattice bond), and ionic bonds (opposite electric charges-cation=+ anion=--that bond).
C2H5OH, which is the chemical formula for ethanol, contains both ionic and covalent bonds. The bonds within the molecule are primarily covalent, which involve the sharing of electrons between atoms. However, ethanol can also form weak hydrogen bonds in its liquid state.
The Oxygen and the Hydrogen atoms are held together by Covalent bonds and the Calcium is held together with Ionic bonds.