HELPP PLEASEE!! 7. Which of the following statements is accurate? *
A. The nucleus makes up the majority of the volume of an atom.
B. The nucleus makes up the majority of the size of an atom.
C. The electron cloud makes up the majority of the mass of an atom.

D. The electron cloud makes up the majority of the volume of an atom.

D. The electron cloud makes up the majority of the volume of an atom.

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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.