Responses
Hydrogen only has one electron
Hydrogen only has one electron
Hydrogen is stable, with two electrons in its outer shell.
Hydrogen is stable, with two electrons in its outer shell.
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 does not have any neutrons.
1 answer
The statement that best explains why hydrogen’s atomic number is equal to its mass is:
Hydrogen does not have any neutrons.
This is because the atomic number of an element is defined as the number of protons in its nucleus, and for hydrogen, which has one proton and no neutrons, the atomic mass is approximately 1, making the atomic number (1) equal to its mass number (1).
