ANSWER and EXPLANATION
The electronic charge of an atom or particle is dependent on the type and number of charged particles that are in the atom or particle.
A nucleus is made up of neutrons and protons while the electron cloud is made up of electrons.
Neutrons are uncharged particles, protons are positively charged and electrons are negatively charged.
This implies that:
The nucleus of this atom has a positive charge, while the electron cloud has a negative charge.