hich statement best explains why hydrogen's atomic number is equal to its mass?(1 point) Responses Hydrogen does not have any neutrons. Hydrogen does not have any neutrons. Hydrogen only has one electron. Hydrogen only has one electron. Hydrogen is in the first row and the first column of the periodic table. Hydrogen is in the first row and the first column of the periodic table. Hydrogen is stable, with two electrons in its outer shell.

Answer 1

The statement that best explains why hydrogen's atomic number is equal to its mass is: Hydrogen does not have any neutrons.

Hydrogen has an atomic number of 1, which means it has one proton and, in its most common isotope (protium), it does not have any neutrons. Therefore, its atomic mass (1) is effectively the sum of its protons and neutrons, which is why these values can be equal in this case.