The false statement from the given statements is option a.
Explanation:
Hypothesis:
A hypothesis is a intelligent guess or prediction to interpret or explain any phenomena.
It is tested through the series of experiments and by number of studies to actually decide whether hypothesis is in agreement with observation and results predicted by it. These prediction are made on basis of limited evidences. It can be false or true.
Theory:
A theory is an in depth explanation behind any physical phenomena which has been tested multiple times through the correct scientific methods and experimentation. It will give same results and observations.
The answer: for the monoatomic <span>selenium ions </span> -the ion charge of selenium is 2-, so the answer is [Se]2+ as for the monoatomic phosphorus ions -the ion charge of phosphorus is 3-, so the answer is [P]3-