What is the term used for the molecular mass of ionic compounds? Options: A . &nbsp Ionic mass B . &nbsp Ionic molecular weight C . &nbsp Formula unit mass D . &nbsp Molecular Mass

What is the term used for the molecular mass of ionic compounds?

Discussion Forum : Atoms And Molecules

Question -

What is the term used for the molecular mass of ionic compounds?

Options:

A . Ionic mass

B . Ionic molecular weight

C . Formula unit mass

D . Molecular Mass

Answer: Option C
:
C
The word formula unit is used for the substances of which constituent particles are ions.
For example, magnesium chloride has a formula unit

M g C l_{2}

Its formula unit mass can be calculated as:

(1 \times A t o m i c m a s s o f m a g n e s i u m) + (2 \times A t o m i c m a s s o f c h l o r i n e)

(1 \times 24) + (2 \times 35.5) = 95 u

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