What do we now call the negative particles that Thomson said were parts of all atoms? protons electrons cathode rays neutrons

2b2t

explanation:

2b2t

oxygen, selenium, tellurium, and polonium.

they're all from the same group as sulfur (group 16).

each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.