It is the electron cloud that surrounds the nucleus of an atom. The electrons move in their orbits around the nucleus, and they form the cloud.
Assuming that's the nucleus of an atom, the answer is "electrons". They are in "clouds", sort of, around the nucleus of atoms.
electrons
Protons are particles in the atomic nucleus; electrons move around the nucleus.
When it comes to characteristics of atoms, all of them have one nucleus and electrons that circulate in orbits around the nucleus. The nucleus has protons and neutrons.
Electrons.
An atom contains protons, neutrons, and electrons, electrons being the one that moves around the nucleus. The other two are in the nucleus.
In energy shells around and outside the nucleus of an atom!!!!
The planetary theory of atoms suggests that atoms are like miniature solar systems, with electrons orbiting around a central nucleus. This model was proposed by Niels Bohr in 1913 as an improvement on the earlier plum pudding model. It helped explain the stability of atoms and the discrete energy levels of electrons.
The nucleus. It is composed of protons and neutrons, which are tightly bound together by the strong nuclear force. The nucleus is surrounded by a cloud of electrons that orbit around it.
Electrons are negatively charged (around the nucleus) and protons are positively charged (inside the nucleus)
The electrons flow around the atoms nucleus...the protons and neutrons are on the inside of the neucleus.
Atoms have positive protons in the nucleus with an equal number of negative electrons around the outside the nucleus. No there is no charge on an atom with equal numbers of protons and electrons.