Question

4. Add concentrated hydrochloric acid to each of the given substances, warm, make observations, identify any
make deductions :
(a) copper oxide
(b) manganese dioxide.​

Answer 1

Answer:

The electron is a subatomic particle, symbol e⁻ or β⁻ , whose electric charge is negative one elementary charge. Electrons belong to the first generation of the lepton particle family, and are generally thought to be elementary particles because they have no known components or substructure.