What is the number of protons, neutrons, and electrons in #""_1^1H#?

1 Answer
Apr 26, 2017

Answer:

In the #""^1H# isotope.................?

Explanation:

The superscript represents nuclear mass; here it is #1#, and thus there is ONE proton in the nucleus, one positively charged, massive particle. Around the nucleus, ONE electron is conceived to circulate, to orbit. And we assign a negative charge to this particle, and its mass is negligible.

The #1# subscript in #""_1^1H# is superfluous. The symbol #H# specifies an atomic number, #Z=1#.

Other isotopes of hydrogen exist, for instance #"deuterium"#, #""^2H#, which has (necessarily) one nuclear proton (why necessarily, given what I have said?) and what else, and also the #"tritium"# isotope, #""^3H#. How many neutrons here?