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.
A neutral atom with 12 protons will have 12 electrons in order to balance the positive charge from the protons.
That atom is Arsenic. It would have 33 electrons.
The neutral atom of cadmium has 48 electrons.
It will have 30 protons and 30 electrons if the atom is neutral.
Oxygen has 8 protons and 8 electrons in its atom.
In a neutral atom, the number of electrons is equal to the number of protons. So, in an atom with three protons, it would contain three electrons. The number of neutrons does not affect the charge or number of electrons in the atom.
Generally an atom has the same number of protons and electrons. Nitrogen has seven protons.
An atom with 97 protons is an isotope of the element berkelium, which has an atomic number of 97. In a neutral atom, the number of electrons equals the number of protons, so a neutral berkelium atom would have 97 electrons. If the atom is ionized, the number of electrons would differ depending on the charge of the ion.
The number of electrons should = the number of protons.
An atom with 35 protons is iodine, which is a neutral atom. In a neutral atom, the number of electrons equals the number of protons, so it also has 35 electrons. Therefore, an atom with 35 protons has 35 electrons.
An atom has the same number of electrons as it does protons, and the number of protons determines what element it is.
A Krypton atom has 36 protons and 36 electrons each.