Question

I was asked a question that a Proton is an ionised hydrogen atom. i was sure that it is correct in case of H+ but hydrogen also forms H- ion .... so i have doubt that the statement is true or not... please help me .....no spamming

Answer 1

H has only one electron which when removed makes it H+ or a proton.
Now you are confusing both the statements.
When an electron is added to any atom it gains a net negative charge and if an electron USA removed from an atom it gains a net positive charge.
Well there question is correct and even your doubt is so but you are mixing both the things up.
The question says only about a proton so yes it is H+.
H- is formed when an electron is added so the statement is true.
Hope this helps... :)

Answer 2

The Hydrogen atom contains ONE electron and ONE proton.

It is not H- when it is at its atomic state because the proton and the electron balance its electrical charge, making it globally neutral and therefore H.

You have to understand that a proton and an electron have exactly the same charge, but one is negative and the other one is positive, their charges balance themselves when there are as many protons as there are electrons.

One electron less? Your atom becomes unbalanced regarding its charge and the protons are more powerful because they have one positive charge the other side can’t reciprocate.

1 electron more? The protons become outnumbered.

In the process of making ions, ONLY electrons can be gained or lost, changing the global charge.

When the Hydrogen atom becomes an ion, it can becomeH+, meaning that it loses its only electron and his global charge is now positive, making him a positive ion, a cation.

You should also be aware that there are three kinds of hydrogen:

Hydrogen (1 proton, 1 electron)Deuterium (1 proton, 1 electron, 1 neutron)Tritium (1 proton, 1 electron, 2 neutrons)

While the second and the third are rarer, they can still form ions all the same, because neutrons don’t affect the global charge of the atom since they are neutral.

Your question refers to H-. It is another kind of hydrogen ion, ananion this time. Instead of losing its only electron, the hydrogen atom has gained one and has therefore gained a negative charge.

As simple as that :)