Question

in the modern periodic table, elements are arranged by increasing . need help? review these concept resources. read about the concept

Explanation:

In the modern periodic table, the fundamental principle of arrangement is based on the atomic number (which is equal to the number of protons in an atom's nucleus). As the atomic number increases, the elements are placed in order, and this also corresponds to the increasing number of protons (or the positive charge of the nucleus, related to the atomic number). The key concept here is that the modern periodic table arranges elements by increasing atomic number (or proton number, since atomic number = number of protons).

Answer:

atomic number (or proton number)