The atoms having 2 protons only in nucleus is not stable but 2 protons with 2 neutron in Helium nucleus are very stable.
The electron is located in a cloud-like orbital around the atom's nucleus. The orbitals are of different types indicated by the letters s, p, d, etc. An s orbital has spherical symmetry, but the other types are more complicated.
Copper's atomic number is 29. Thus, copper has 29 protons per atom. To be electrically neutral then, it must also have 29 electrons per atom.
There are various different forms of radioactive decay, and there is one which involves the loss of protons by emission of an alpha particle, which is equivalent to a helium nucleus, containing two protons and two neutrons.
I think protons and neutrons, but I don't know for sure. It might be, because the protons and neutrons are placed together in the nucleus? I might be wrong, but I tried:)
H2O has 10 protons. Hydrogen has 1 proton, so 2 hydrogen have 2 protons. Oxygen has 8 protons.
It would by definition be Helium (atom number = number of protons = 2) but the nucleus of the stable isotope 4He also contains 2 neutrons (the mass number = total number of p's and n's = 4)
Germanium has thirty two protons. If two were removed, the atom would have thirty protons, making it Zinc.
If you remove two protons from a germanium atom, it would become a selenium atom. This is because germanium has 32 protons, while selenium has 34 protons.
The atom in a normal state would have two protons to match the two electrons, making the overall charge zero. If the atom is an ion, it would have an mismatched number of protons and electrons, giving it a positive or negative overall charge.
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If you build an atom using two protons, two neutrons and two electrons you would build an atom of Helium. To be more-precise, this would create Helium-4 the common isotope of Helium.
There are two neutrons in a helium atom, along with two protons and two electrons. Helium-4 is the most common and stable isotope of helium, with two protons and two neutrons.
Adding protons would make it a different element. If Electrons were added to an atom, it would start behaving like another element. For example Fluorine would try to be more like Neon. All elements want balance, so they get as close in relation to these noble gases as possible by sharing, stealing, and giving up electrons
Helium is the atom with the least electromagnetic charge due to its stable configuration of two protons and two electrons, resulting in a neutral charge overall.
An atom has the same number of electrons and protons. Protons are positively charged particles found in the nucleus of an atom, while electrons are negatively charged particles that orbit the nucleus.
There generally isn't a problem; the more protons an atom has, the more neutrons it takes to glue them together. A Helium atom has two protons and generally two neutrons; in every other stable atom, there are more neutrons than protons. There are isotopes of elements with fewer-than-normal numbers of neutrons; these isotopes are generally unstable and radioactive, and will generally decay into other elements.
Protons and neutron