The reason Catholics do not eat meat on Fridays is in remembrance  of the day of Jesus Christ's sacrifice for all of humanity. It is a  form of penance to honor and worship â¦ God.    Note that many Catholics today believe that the Church allows them  to eat meat on Fridays except during Lent. This is not true.
Some compounds contain both ionic and covalent bonds. These compounds contain polyatomic ions. Many of these compounds contain a metal, a nonmetal and also hydrogen. However, other examples contain a metal joined via an ionic bond to covalently bonded nonmetals. Here are examples of compounds that exhibit both types of chemical bonding. Examples of Ionic Bonds-Ionic Compounds. Examples of Covalent Bonds-Covalent Compounds.
Ionic bonds are very strong, so compounds that contain these types of bonds have high melting points and exist in a solid state under standard conditions. Finally, remember that in an ionic bond, an electron is actually transferred from the less electronegative atom to the more electronegative element.The obvious exception is in a bond between two atoms of the same element.) We say that covalent bonds are nonpolar if the electronegativity difference between the two atoms involved falls between 0 and 0.4. We say they are polar if the electronegativity difference falls between 0.4 and 1.67.