Q: Atoms are composed of negatively charged electrons and a positively charged what?


Read this paragraph and choose the correct option from the provided answers:

30.2 Discovery of the Parts of the Atom: Electrons and Nuclei • Atoms are composed of negatively charged electrons, first proved to exist in cathode-ray-tube experiments, and a positively charged nucleus. • All electrons are identical and have a charge-to-mass ratio of.

 Choices:

- DNA segment

- neutron

- bond

- nucleus


A:
nucleus