Final answer:
The claim is false; a negatively charged atom has more electrons than protons, with electrons being negatively charged and protons positively charged.
Step-by-step explanation:
The statement that "There are more protons than electrons in a negatively charged atom" is false. An atom becomes negatively charged when it has more electrons than protons. Electrons are negatively charged, and protons are positively charged. In an uncharged, neutral atom, the number of electrons orbiting the nucleus is equal to the number of protons inside the nucleus, leading to no net charge. However, if an atom gains additional electrons, it becomes negatively charged. Therefore, a negatively charged atom has an excess number of electrons compared to protons.