NCl3 is not ionic but MgF2 is ionic
The formula unit for magnesium fluoride is MgF2. From the periodic table, add the atomic weight of 1 magnesium atom and 2 fluorine atoms to get to get 62.3018. This means that 1 mole of MgF2 is 62.3018g of MgF2. Now, to find out the mass of 4.78 mol MgF2 X the g/mol so that you will cancel the moles, and keep the grams. 4.78 mol MgF2 X 62.3018g MgF2/1mol MgF2 = 297g MgF2 *The answer 297 is in keeping with significant figures. When you multiply or divide, the answer can have no more than the fewest significant figures in the calculation, which was 4.78, and which has only three significant figures.
Ionic .
MgF2 isn't a covalent bond; it is an ionic bond. Magnesium is a metal and Fluorine is a nonmetal, so there is a complete transfer of electrons.
2MgOF2+4HS
NCl3 is not ionic but MgF2 is ionic
Magnesium (II) fluoride, MgF2 Formula weight: 62.302 grams/moleSee the Related Questions for how to calculated the molecular weight of any molecule!
MgF2 is higher that LiF do to the greater bond strength in MgF2. This greater strength is indicated by the charge of Mg (+3) which is higher than the +2 charge of Li. Also the MgF2 is larger in mass.
MgF2
The formula unit for magnesium fluoride is MgF2. From the periodic table, add the atomic weight of 1 magnesium atom and 2 fluorine atoms to get to get 62.3018. This means that 1 mole of MgF2 is 62.3018g of MgF2. Now, to find out the mass of 4.78 mol MgF2 X the g/mol so that you will cancel the moles, and keep the grams. 4.78 mol MgF2 X 62.3018g MgF2/1mol MgF2 = 297g MgF2 *The answer 297 is in keeping with significant figures. When you multiply or divide, the answer can have no more than the fewest significant figures in the calculation, which was 4.78, and which has only three significant figures.
MgF2 Mg +F2 -> MgF2 MgF2 is ionic- it consists of Mg2+ and F- ions in a 1: 2 ratio.
The chemical equation is:MgF2 + 2 Na = 2 NaF
MgF2
These are the ions and their charges: Mg+2 F-1The charges have to add up to zero, so two -1 fluorine cancel out one +2 magnesium ion: Mg+2 F-1 F-1Simplify: MgF2
MgF2 isn't a covalent bond; it is an ionic bond. Magnesium is a metal and Fluorine is a nonmetal, so there is a complete transfer of electrons.
2MgOF2+4HS
2 ions