Question

drag the right word to its definition
a table that shows all the
elements arranged by
atomic number.
proton
periodic table
molecule

Explanation:

The definition "a table that shows all the elements arranged by atomic number" matches the term "periodic table". A proton is a subatomic particle, and a molecule is a group of atoms bonded together, so neither of those fit this definition.

Answer:

The word that matches the definition "a table that shows all the elements arranged by atomic number" is "periodic table". So we drag "periodic table" to the definition.