Answer:
2.580
Explanation:
There are 4 significant figures in the most precise number, therefore you round 2.57964 to 2.580 to get the correct amount of significant figures.
To help, I drew a diagram. This represents an ionic bond between Na and Cl. Na is giving his single electron to Cl, which is indicated by the arrow, to make Cl full with 8 electrons.
A cubic centimeter is equal in volume to one milliliter
Answer:
Na2O
explanation.
Ionic bonds refers to complete transfer of electrons from one atom to another