Responses
Hydrogen is stable, with two electrons in its outer shell.
Hydrogen is stable, with two electrons in its outer shell.
Hydrogen only has one electron
Hydrogen only has one electron
Hydrogen does not have any neutrons.
Hydrogen does not have any neutrons.
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.
1 answer
The best statement that 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. The most common isotope of hydrogen has no neutrons, and its mass number is approximately equal to its atomic number (1). Thus, the absence of neutrons results in the atomic number being equal to its mass number in this case.
