Question

26 ccc patterns recall that elements above and below each other in the periodic table have similar physical and chemical properties. what do you think might account for these similar properties? explain.

Explanation:

Elements in the same group (column) of the periodic table have similar physical and chemical properties because they have the same number of valence electrons. Valence electrons are the electrons in the outermost shell of an atom and are responsible for an atom's chemical behavior. Since elements in the same group have the same number of valence - electrons, they tend to form similar types of chemical bonds and have similar reactivity patterns.

Answer:

Elements in the same group have the same number of valence electrons, which determines their chemical and many physical properties.