Asample of a compound contains 3.21 g of sulfur and 11.4 g of fluorine. which of the following represents the empirical formula of the compound?
a. sf2
b. sf3
c. sf4
d. sf5
e. sf6

The empirical formula will be

Explanation:

If percentage are given then we are taking total mass is 100 grams.

So, the mass of each element is equal to the percentage given.

Mass of S= 3.21 g

Mass of F = 11.4 g

Step 1 : convert given masses into moles.

Moles of S =

Moles of F =

Step 2 : For the mole ratio, divide each value of moles by the smallest number of moles calculated.

For S=

For F =

The ratio of S: F= 1: 6

Hence the empirical formula is

each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.

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