1 FACT: Protection against whooping cough from early childhood vaccines may wear off, leaving adults and adolescents at risk for infection.  FACT: In China, whooping cough is known as the âcough of 100 daysâ due to the prolonged, dry cough that is experienced by infected individuals.
Which compound contains ionic bonds 1. CaO because Ca is a metal and O is a gas and all the other possibillities are gasses combined and ionic has a metal and gas combination if you look at the periodic table of el â¦ ements the right side is gases but they are determined by like a staircase and the rest are metals.
CH4, methane, is a gas, and the bonds are 97% covalent. SO4^2- is the sulfate polyatomic ion. The bonds in sulfate ion are 83% covalent. In Na3PO4 the bonds in the PO4^3- polyatomic ion are 68% covalent and the bonds between O and Na are 80% ionic. Therefore, Na3PO4 will have high ionic character.