Calcium's location in the periodic table of the elements. Photo Credit: Todd Helmenstine. Potassium is the 20 th element on the periodic table. It is located in period 4 and group 2.alcium's location in the periodic table of the elements. Photo Credit: Todd Helmenstine. Potassium is the 20 th element on the periodic table. It is located in period 4 and group 2.
The contagious period is the amount of time during which a sick child can give the disease to others. For major illnesses (such as hepatitis), a child will need to stay at home or in the hospital until all chance of spread has passed. For minor illnesses (like the common cold) the guidelines are less strict.
According to the Centers for Disease Control and Prevention, the flu is very contagious and can even go on to cause other complications like pneumonia, ear infections and dehydration. Understanding the flu incubation period is a helpful tool for preventing the spread of the virus. The incubation period refers to the time between when you are exposed to the flu virus and when you first experience symptoms. Video of the Day