Answer:
the sum of the atoms or ions in the compound
The alkaline earth metals (the second group) because their ion charge is +2
<span>It is known that amu is equal to the molar mass of 1 mole of substance. Therefore,
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Weight of one mole of uranium = 238 g/mol
The molar mass or molecular weight for U205 is 556 g/mol.
(238 x 2) + (16 x 5) = 556 g/mol
Simple molecular substances consist of molecules in which the atoms are joined by strong covalent bonds. However, the molecules are held together by weak forces so these substances have low melting and boiling points.
I hope this helps.=^P
