What is the formula for Cobalt (2) Phosphide?

Using the periodic table, complete the table to describe each atom. type in your answers. a ? b? c? d? e? f?

Sally is making a model of a magnesium atom with an atomic mass number of 24 for her chemistry class. she has foam balls for the protons, neutrons, and electrons. she has added 6 neutrons to her model so far. how many more neutrons does she need to add to complete her neutral atom of magnesium?

In what environment would mineral formation caused by high pressures and high temperatures most likely occur?