Question

question 13 of 25
how are the elements arranged in the current periodic table?
a. in order of increasing number of neutrons
b. in order of increasing number of electrons
c. in order of increasing average atomic mass
d. in order of increasing atomic number

Explanation:

The modern periodic table arranges elements by increasing atomic number (number of protons). Atomic number defines an element's identity. Neutrons, electrons, and atomic mass are not the basis for this arrangement.

Answer:

D. In order of increasing atomic number