Question

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> What is an electron? What is its relative mass and charge?

Answer 1

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> An electron is that subatomic particle which is negatively charge and has a mass about 1/1840 u of that of an atom of hydrogen.