The correct option is C Electrons are negatively charged particles.
Protons, neutrons and electrons are the fundamental particles of any atom. Protons are positively charged, electrons are negatively charged and neutrons are neutral and carry no charge. In a normal atom, the number of protons and electrons are the same; hence, an atom carries no charge. On accepting electrons, non metallic ions carry more electrons than protons. This imparts a net negative charge to the ion.