Which part of an atom carries a positive electrical charge?

In an atom, protons are responsible for carrying a positive electrical charge. They are located in the nucleus of the atom, alongside neutrons, which carry no charge (they are neutral). The presence of protons is vital because they determine the atomic number of an element, which in turn defines the element itself.

For example, an atom with one proton is hydrogen, while one with six protons is carbon. The positive charge of protons balances the negative charge of electrons, which are found outside the nucleus and carry a negative charge. This balance between protons and electrons is crucial for the stability of atoms and the formation of chemical bonds.

The other options do not apply as follows: neutrons do not carry any charge, while electrons, although they are essential components of the atom, carry a negative charge. "Ground" is not a component of an atom and does not pertain to the charge of its particles.