The diagram below shows some subatomic particles. What is the particle that is labeled with a question mark (?) in the diagram? beta particle
quark
isotope
alpha particle

pie chart because it is in percents ( % )

the answer would be a

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.