mass of H atom ??

[jazzchan]

dear all

would u tell me what is the mass of H atom ?? is equal to mass of a proton(1.673x10^-27). ??

[Tom Mattson]

If you really want to get precise about it, you can include the mass of the electron as well.

[HallsofIvy]

However, the mass of a proton is about 2000 times the mass of an electron so ignoring the electron isn't all the imprecise!