What is unique about how the periodic table of the elements is organized?

Question

A. Elements are grouped by multiples of atomic number.
B. Elements are in order so that each element has an atomic mass that is 1 greater than the previous element.
C. Elements are in order according to the number of neutrons in their nucleus.
D. Elements with similar properties are grouped together in a pattern.

Answer 1

The correct answer is: D. Elements with similar properties are grouped together in a pattern.

The periodic table is organized in such a way that elements with similar chemical and physical properties are placed in the same columns (groups or families). This organization reflects the periodicity of the elements' properties as you move across periods (rows) and down groups.