Need with these questions for chemistry i need the answers fast

Phosphorous can form an ion called phosphide, which has the formula p3−. this ion can form an ion called phosphide, which has the formula p3−. this ion properties very similar to those of pforms when a phosphorus atom loses three protonsis called a cationcontains 18 electrons

How might this scientific phenomena be explained? a paper clip floats on water.

What is the name of the enzyme that forms at the start of transcription?