No, it is not possible to have an atom consisting solely of protons and electrons other than hydrogen. In an atom, the number of protons in the nucleus determines the element to which it belongs. For example, an atom with one proton is hydrogen, an atom with two protons is helium, and so on.
The number of protons in an atom defines its atomic number and determines the chemical properties of the element. Electrons in an atom occupy specific energy levels or orbitals around the nucleus, and these energy levels are determined by the atomic number.
In a stable atom, the number of electrons is equal to the number of protons, maintaining overall electrical neutrality. This balance between protons and electrons is essential for the stability and behavior of the atom. If an atom has a different number of electrons than protons, it becomes an ion with a net electric charge.
So, atoms with only protons and electrons must maintain an equal number of protons and electrons to be electrically neutral. If the number of protons is greater than the number of electrons, it becomes a positively charged ion. If the number of electrons exceeds the number of protons, it becomes a negatively charged ion.
Therefore, in order to have a stable atom, there must be a balance between the positive charge of protons and the negative charge of electrons. This balance is maintained by the specific number of protons and electrons characteristic of each element.