What is the correct formula for an ionic bond between Na and O?
NaO₂
Na20
Nao
Na.

Which organic molecule is found in the chromatin of cells?

What semimetal can form four single covalent bonds.

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?