Answer:
the correct formula is Na2O
An ionic bond is a type of chemical bond formed through an electrostatic attraction between two oppositely charged ions. Ionic bonds are formed between a cation, which is usually a metal, and an anion, which is usually a nonmetal. A covalent bond involves a pair of electrons being shared between atoms.
Answer:
B. The region outside a nucleus where the electron is moving
Explanation:
The more the electron moves, the higher energy level it has, the slower the electron moves the lowwer energy level it has.
Answer:
I would go with A because if it makes caves it can cause a sinkhole.
Explanation:
When magma cools down it turns into rocks these rocks are known as extrusive igneous rock