Using a cathode ray tube, Thomson confirmed that O atoms must have an overall positive charge.
atoms are made of particles that have a negative charge.
O electrons in atoms must have varying amounts of energy.
electrons are only found in the nucleus.

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increased stability in the completion of fluorine's outer shell.

one negative thing it that it can kill water animals. another negative thing is it can cause the destruction of ecosystem. one way water pollution can be reduced is to conserve energy.