MgF₂ has one magnesium ion and two fluoride ions per unit of magnesium fluoride. The percent mass of elements of MgF2 are 39.012 of Mg and 60.989 of F.
- Magnesium fluoride is a binary ionic compound. It is comprised of two fluorine and one magnesium atom. Since it is an ionic compound, it is made up of anions and cations.
- Magnesium is metal and has a much lower electronegativity than fluorine. Hence, this compound consists of two fluoride anions and a magnesium cation.
- Mass percent of an element in a compound ⇒
( mass of the elements/ molar mass of compound) × 100
Molar mass of MgF₂, is 62.301g/mol (24.305+2×18.998)
Mass Percent of Mg =( 24.305 / 62.301) × 100
= 39.012%
Mass percent of F = (18.998×2 / 62.301) ×100
= 60.989%
Thus we can conclude as :
Element Atomic Number of Atoms Mass Percent.
mass
Mg 24.305 1 39.012%
F 18.998 2 60.989%
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Incomplete combustion occurs when the supply of air or oxygen is poor. Water is still produced, but carbon monoxide and carbon are produced instead of carbon dioxide. ... Carbon monoxide is a poisonous gas, which is one reason why complete combustion is preferred to incomplete combustion.
You don't need to know the mass. To get to atoms from moles you divide the moles by avagadros number.
5.00 x (6.02x10^24)= 3.01x10^25 molecules
As pressure increases, density increases.
Group 16. With two electrons, this group completes its octet.