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.
Groups. A vertical column of elements in the periodic table is a group. The elements in a group have similar chemical properties to each other. For example, group 1 contains sodium and other very reactive metals, while group 7 contains chlorine and other very reactive non-metals.Group 0 (also known as group 8 or group 18) contains helium and other very unreactive non-metals.The modern periodic table. Note that you will never find a compound in the periodic table, because these consist of two or more different elements joined together by chemical bonds. Page: 1  1. 2  2. 3  3.roup 0 (also known as group 8 or group 18) contains helium and other very unreactive non-metals. The modern periodic table. Note that you will never find a compound in the periodic table, because these consist of two or more different elements joined together by chemical bonds. Page: 1  1. 2  2. 3  3.