Which has a greatest mass, one atom of carbon, one atom of hydrogen, or one atom of litium

Two atoms interact with each other as shown by the equation. complete the equation by filling in the missing parts. 1 2 3 4 5 h he li

When you mate two plants together the terms is called? answer it fast as possible plz! i have a test tomorrow!

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?