Answer
PART A:
The modern atomic model represents atoms containing a nucleus of protons; positively charged and neutrons; neutral, and a cloud surrounding it containing the electrons which is negatively charged; this is sometimes referred to as the electron cloud model. The reason electrons are represented as a cloud is because their behavior is not certain.
The modern model of atom showing the location of the charge of the proton, electron, and neutron is shown below. of the
