Does Phosphorus Gain or Lose Electrons?

Phosphorus tends to lose 5 electrons and gain 3 electrons to complete it's octet.

Does phosphorus gain or lose electrons to form an ion?

Phosphorus has 5 valence electrons. It can lose 5 electrons to form a +5 ion and it can gain 3 electrons to form a -3 ion.

Does phosphorus gain electron?

Luckily, every phosphorus atom is looking to gain three electrons. It's a perfect match!