Question

What experimental evidence indicates that 1- electrons are negatively charged, 2- electrons are universal constituent of matter, 3- electrons are material particles.

Answer 1

1.by performing cathode Ray's experiment

2.every matter is composed of some material and that iss nucleas and nucleus is surely composed of negatively and positively charged particles

3.and yep it also can be proved cathode Ray's experiment

Answer 2

Explanation:

yes,an electron is a univerrsal constituent of atom because an atom is mainly consist of neutron, proton and electron. proton and electron are in the nucleus where as electrons are around nucleus.Mar