Compared to a phosphorus atom, a p3- ion has

Compared to a phosphorus atom, a P3- ion has more electrons and a larger radius. With a negative charge means there are more electron than protons, this increases the radius because positive charge is trying to hold a larger negative charge. Hope this helps

Three more electrons

Explanation:

Compared to a phosphorous atom (P) the P3- ion has gained 3 electrons resulting in the trivalent negative charge. P3- is a reduced state of P and to name some properties:

It has a bigger atomic radius due to the extra electrons and the weaker attraction the protons have to them.It can react as a base (taking electrons)

During photosynthesis, plants transform electromagnet energy from the sun into chemical energy.

The most plausible answer is b, duration. the given amount of time is considered how long it last for.