Question

The modern periodic table is arranged in order of increasing _____________

Answer 1

The modern periodic table of elements is arranged in order of increasing atomic number.

Step-by-step explanation:

The modern periodic table of elements is arranged in order of increasing atomic number. Each element in the periodic table is assigned a unique atomic number based on the number of protons in its nucleus. As you move across a period from left to right, the atomic number increases, indicating the addition of more protons in each successive element. Similarly, as you move down a group from top to bottom, the atomic number also increases, indicating the addition of more energy levels or shells in each successive element.

Answer 2

Mendeleev arranged the elements into rows in order of increasing mass so .. In the modern periodic table the elements are arranged by increasing atomic .
Answer: atomic