Question

2.1. Discovery
1. How were electrons discovered ?
​

Answer 1

Answer:

The number of protons, neutrons, and electrons in an atom can be determined from a set of simple rules. The number of protons in the nucleus of the atom is equal to the atomic number (Z). The number of electrons in a neutral atom is equal to the number of protons

Explanation:

please follow me and make brainlist answer