I don't understand this I'm confused ​

Is this a single replacement reaction or there is no

How does the viscosity of magma change as magma cools?

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