No, protons cannot be negative in an atom. Protons are subatomic particles that carry a positive electric charge. They are one of the fundamental building blocks of atoms, along with neutrons and electrons.
In an atom, protons are located in the nucleus, which is the central core of the atom. The number of protons in an atom determines its atomic number and defines the element. For example, an atom with one proton is hydrogen, while an atom with six protons is carbon.
On the other hand, electrons, which are negatively charged particles, orbit around the nucleus of an atom in specific energy levels or electron shells. The number of electrons in an atom is usually equal to the number of protons, ensuring overall electrical neutrality.
It's important to note that when discussing the charge of particles within an atom, protons are always positive, and electrons are always negative. This charge separation between protons and electrons creates the electric force that holds the atom together.