Without a nucleus it can not be either an atom or hydrogen.
A stable atom of hydrogen (H)
Hydrogen.
I am assuming that by "kind of the atom" you mean atomic particle. In that case, the particles concentrated in a nucleus are protons(positively charged) and neutrons(no charge).All atoms are concetrated in the nucleus. Almost all of the mass of an atom is located in the nucleus. The atom mostconcentrated in the nucleus would be a hydrogen atom. As Hydrogen frequently loses its single electron, an H+ atom is all concentrated in its nucleus. :-)
It does have a nucleus. It consists of just one proton.
The hydrogen nucleus has a single proton. The helium nucleus has two protons and one or two neutrons.
The nucleus of hydrogen has 1 proton, whereas that of helium has 2 protons.
The nucleus of hydrogen has 1 proton, whereas that of helium has 2 protons.
A stable atom of hydrogen (H)
in the nucleus
Hydrogen.
The atomic nucleus of hydrogen atom has a diameter of 1,75 femtometres.
hydrogen
Hydrogen
Hydrogen
Hydrogen.
what is located in the middle of any atom is it's nucleus. The nucleus of an atom generally contains a mix of protons and neutrons but a hydrogen atom contains only one proton. So in answer to your question, a proton is in the middle of a hydrogen atom.
I am assuming that by "kind of the atom" you mean atomic particle. In that case, the particles concentrated in a nucleus are protons(positively charged) and neutrons(no charge).All atoms are concetrated in the nucleus. Almost all of the mass of an atom is located in the nucleus. The atom mostconcentrated in the nucleus would be a hydrogen atom. As Hydrogen frequently loses its single electron, an H+ atom is all concentrated in its nucleus. :-)