its not, its closer to about 1/1800 of a hydrogen atom, the English chemist john Dalton was the first person to discover relative atomic masses and use them properly.
No element is lighter than hydrogen. Not even stripping the electron off a hydrogen atom would make a lighter item, because electrons have almost no mass and the proton would just grab it back anyway.
In the atom a proton has the charge +1 and the electron the charge -1.
the electron is the least massive atomic particleelectron
Subatomic particles are measured in amu's--atomic mass units. Protons and neutrons are both approximately 1 amu, and electrons have a mass so much less as to be negligible (about 1/2000 that of a proton).
Atomic mass is based on the proton and neutron. For the most part the mass of an electron is infinitesimally small.
The mass of an electron is approximately 9.11 x 10^-31 kilograms. In comparison, a hydrogen atom, which consists of one proton and one electron, has a mass of about 1.67 x 10^-27 kilograms. This means that the mass of the electron is roughly 1/1836 of the mass of the hydrogen atom, making the electron's mass negligible in comparison to the proton's mass within the hydrogen atom.
Though a hydrogen atom typically has one proton, its mass is not solely determined by the proton. The mass of a hydrogen atom comes from the combination of the proton and an electron. The electron contributes a much smaller amount to the overall mass compared to the proton.
There are different isotopes of hydrogen. Assuming you mean the difference in atomic mass between a proton and an electron though, the atomic mass of a proton is about 1836 times greater (approx 1.007 amu), and the neutron is a little more than that (approx 1.009 amu).
The reduced mass ( \mu ) of a hydrogen atom, which consists of a proton and an electron, can be calculated using the formula ( \mu = \frac{m_p m_e}{m_p + m_e} ). Given that the mass of the proton ( m_p ) is significantly larger than that of the electron ( m_e ), the reduced mass is approximately equal to the mass of the electron for practical purposes. Thus, the reduced mass of the hydrogen atom is almost equal to ( \frac{m_e}{2} ), or about ( 9.11 \times 10^{-31} ) kg when considering the mass of the electron.
An average hydrogen atom consists of 1 proton and 1 electron. The 1 proton accounts for nearly all of that atom's mass. The 1 electron has only about 1/2000th the mass of the proton. That's about 0.0005 of the total atomic mass.
The mass of a neutron is approx 1837 times that of an electron. The mass of a proton is similar to that of a neutron. In the simplest atom, hydrogen, the mass of the nucleus is 1,837 times that of an electron. In the largest known atom, that of ununoctium, containing 281 baryons (neutrons or protons) the mass of the nucleus is approx 516,200 times that of an electron. So take your pick: 1,837 to 516,200.
The pair form a hydrogen atom.There is a fallacy that's taught about this pairing, which is that the electron-proton pair form a neutron. See my answer to the question "What particle has the same mass as a hydrogen atom?" for more details about this, and why it is wrong.
Yes, in general. All hydrogen atoms contain one proton, most with no neutrons and all neutral atoms with one electron - and the electron has a much smaller mass. Some hydrogen atoms contain one (or, rarely, two) neutrons and so are heavier. But on average the atom has a mass much the same as a proton.
all atoms have different masses Mass of an atom is due to protons and neutrons present in an atom and number of proton is something that distinguish between atoms, therefore mass of hydrogen is different to the mass number of oxygen, hydrogen's mass is 1 as it has only 1 proton and no neutrons, and oxygen mass's is 16 as it has 8 protons and 8 neutrons.
An electron has the least mass among the three fundamental particles of an atom, which includes protons and neutrons.
This is called also protium and contain 1 proton and 1 electron.
The mass of a neutron is approx 1837 times that of an electron. The mass of a proton is similar to that of a neutron. In the simplest atom, hydrogen, the mass of the nucleus is 1,837 times that of an electron. In the largest known atom, that of ununoctium, containing 281 baryons (neutrons or protons) the mass of the nucleus is approx 516,200 times that of an electron. So take your pick: 1,837 to 516,200.