Answer:
Magnesium Oxide (MgO) has a higher melting point than Sodium Chloride (NaCl) which is around 2,800 degrees Celcius. This is because its Mg2+ and O2- ions have a greater number of charges, and so form stronger ionic bonds, than the Na+ and Cl– ions in Sodium Chloride.
Answer:
you can see the empirical formula at the pic
The shared electrons are closer to Cl due to the greater electronegativity of chlorine.
Chemical changes are considered unseen because they occur at the atomic level, changing the actual structure of the thing.
Ne is the smallest
B is the biggest
It goes (smallest to largest) : Ne, F,C,B