Question

complete the sentence by moving the correct answer to the box. elements in the same group on the periodic table have the same number of in their outermost shell, which influences their chemical properties. options: electrons, protons, nuclei, neutrons

Explanation:

In the periodic table, elements in the same group have the same number of electrons in their outermost (valence) shell. This number of valence electrons determines their chemical properties. Protons determine the element's identity, neutrons affect isotopes, and nuclei are the central part of an atom. So the correct term is electrons.

Answer:

electrons