Name: Magnesium Symbol: Mg Atomic Number: 12. Atomic Mass: 24.305 amu.
Melting Point: 650.0 °C (923.15 K, 1202.0 °F) Boiling Point: 1107.0 °C (1380.15 ...
Atoms have an equal number of electrons and protons, so they have no net
electrical ... can be used to explain many of the differences between different
elements. ... such small masses in grams, we use instead the atomic mass unit, or
At one time, the lightest atom was assigned a mass of 1 amu and the mass of any
... to a number of particles equal to the number of atoms in exactly 12 grams of
the <sup>12</sup>C isotope of carbon. ... Predict the mass of a mole of magnesium atoms.
the number of atoms in one molecule, or refer to the mass of one molecule, 386
amu. From a .... ONE MOLE of a chemical substance has a weight (in grams)
equal to its standard weight ... Why is a phosphorus atom heavier than a
magnesium atom? ... mass magnesium...... = ... = 3097. 2431. 1274.