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 elements nitrogen, phosphorus, arsenic, antimony and bismuth are referred to as the nitrogen family of element and occupy group V-A in the periodic table. The nitrogen family periodic table is shown below. Nitrogen and phosphorus are non metals, arsenic is a semi metal or non metal, antimony and bismuth are metals.