does a hydrogen atom have a neutron and proton?

Question

if so, how can a H atom = 1 amu AND a proton = approx 1 amu AND a neutron = approx 1 amu
it just doesn't add up to me, maybe an H atom doesn't have a neutron, but I don't know.

Answer 1

Your thinking is correct, most H atoms contain only a proton and an electron. There are however, two isotopes of hydrogen, deuterium and tritium. Deuterium contains 1 neutron as well as 1 proton and 1 electron. Its oxide is called heavy water. Tritium contains 2 neutrons as well as the proton and electron.

Answer 2

A hydrogen has 1 proton and 1 electron

but some rare isotopes of hydrogen have 1 proton 1 neutron and 1 electron.

Answer 3

The commonest isotope of hydrogen has a nucleus consisting of just a proton. About 1 hydrogen atom in 5000 is the isotope deuterium. It has a neutron as well as a proton in its nucleus. That's why the atomic weight of hydrogen isn't an integer. It's 1.008, the weighted mean of the atomic weights of hydrogen and a very small amount of deuterium. Then there's tritium, a radioactive isotope with a half-life of about 12 years with a proton and two neutrons in its nucleus.

Answer 4

A hydrogen atom with 1 proton and 2 neutrons once losses it electron becomes a positive ion of the hydrogen isotope called Cation Triton 3H+,T+. Cations are ions positively charged once losses electrons Anions are ions negatively charged once gains electrons An atom containing equal number of negative electrons and positive protons as a whole is electrically neutral, so it has not electrical charge. gaining and losing of electrons of an atoms defines the polarity or class of electric charge of the atom which becomes a ion

Answer 5

No neutrons, just a proton and an electron. Hydrogen is the only known element with no neutrons in its nucleus.

Answer 6

It actually doesn´t have any neutrons. However, it can be achieved to put neutrons into the nuclei of the atom, forming what is known as Deuterium (1) and Tritium (2)

Answer 7

Its element 1

It has a neutron too. Except for rare cases, the protons equal the neutrons. So you count it as 2 amus.

Answer 8

It's just one proton with a little electron spinning around it. It doesn't need a neutron because neutrons are only needed if you want to hold 2 protons together.

But you very rarely find a hydrogen on it's own, they like to pair up and form H2.

Answer 9

ALL atoms of one element have the same number of protons and neutrons.

Answer 10

Your logic is correct.

1-H: proton only (most common isotope)
2-H: proton & neutron (called deuterium)
3-H: proton & 2 neutrons (called tritium)