Question

which pattern(s) may be observed from the arrangement of elements in the periodic table? select all that apply. increasing number of protons similarity in their physical and chemical properties increasing relative abundance on earths surface similarity in the number of their valence electrons

Explanation:

• Elements in the periodic table are arranged in order of increasing atomic number (number of protons).
• Elements in the same group (vertical column) have similar physical and chemical properties and the same number of valence electrons.
• The relative abundance of elements on Earth's surface is not a pattern in the periodic table arrangement.

Answer:

increasing number of protons, similarity in their physical and chemical properties, similarity in the number of their valence electrons