Patients who waited more than 6 months to receive cataract surgery experienced more vision loss, a reduced quality of life and had an increased rate of falls compared with patients who had wait times of less than 6 weeks.
Group 16 is the oxygen family. It consists of the elements oxygen, sulfur, selenium, tellurium, and polonium. Each has six of the desired eight electrons required for the octet in its highest energy level.
The first trend is that elements in the periodic table are arranged into columns known as families representing similar chemical behavior. For example, members of the same family prefer to bond to the same number of hydrogen atomsâthe carbon family to four, nitrogen family to three, the oxygen family to two, etc.