Explain, please, on what principle do chemical reactions with phosphorus (if any) work?

Chemical reactions operate on the principle of striving for a stable electron shell. Phosphorus: 1s²2s²2p⁶3s²3p³. Phosphorus is found in various modifications, which differ significantly in reactivity. White is denoted P₄, and red phosphorus is simply P. Taking three electrons, phosphorus seeks to build the P-level up to 6 electrons. (Р³⁻Н⁺₃; Cu²⁻₃Р³⁺₂). Phosphorus is in the same group with ammonia, therefore, its behavior will be similar, but slightly weaker than that of ammonia.