N(Ca)/2 = n(O)/1 = n(CaO)/2
The calcium and the Calcium Oxide are divided by 2 because of their coefficients
there is no number in front of the oxygen so it is over one.
Hope this helped!!
Because it is a covalent bond meaning that they share the electrons to achieve full valence.
Simple...
moving along the periodic table ---->>>
Oxygen has 6.
Nitrogen has 5.
Sodium has 1.
Neon has 8.
Thus, your answer, Oxygen.
Liquids are the easiest state of matter to compress.