Which statement accurately describes the charge of the nucleus of an atom? A. The nucleus can be either positively charged or ne
utral. B. The nucleus never has an electrical charge. C. The nucleus always has a positive charge. D. The charge of a nucleus can change from positive to negative.
An atom contains three sub-atomic particles namely protons, neutrons and electrons.
The nucleus of an atom contains protons and neutrons only. Whereas electrons revolve around the nucleus. Protons are positively charged, neutrons have no charge and electrons are negatively charged.
When an atom is neutral then number of protons equal the number of electrons. Hence, the atom becomes neutral as positive charge is equal to negative charge and thus gets cancelled.
Therefore, a nucleus can be either positively charged or neutral.
Salts formed by incomplete neutralisation of poly-basic acids are called acidic salts. Such salts still contain one or more replaceable hydrogen atoms. These salts when neutralised by bases form normal salts.
