What is an atom with 2 protons and 4 neutrons

1. list three scientific reasons cockroaches may fly.

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?

Asolid that forms and separates from a liquid mixture is called