Question

5. J.J. Thomson…a. discovered the nucleus of the atomb. suggested that the nucleus of the atom had a (+) chargec. proposed that the atom was a sphere of (-) charged. concluded that atoms contained mobile particles with a (-) charge__6. Experiments with the cathode-ray tube demonstrated thata. visible light was influenced by a magnetb. a cathode beam consists of negatively charged particlesc. atoms are negatively chargedd. atoms contain a nucleus

Answer 1

that atoms contained mobile particles with a negative (-) charge

Step-by-step explanation

J. J Thompson is one of the few scientists that worked on the atomic structure. He discovered electron in 1897 when he performed cathode ray experiment. During his experiment, he discovered that most of the rays passed through the tube and few of the rays were deflected.

Recall, that like charges repel and unlike charges attract. He used that simple principle to identify that most of the rays are negatively charged while few of the rays are positively charged because they were deflected

He concluded that atoms contained mobile particles with a negative (-) charge and he named it electron.

Therefore, option D is the correct answer