Question

In which of the following is the name and formula paired correctly?

Answer 1

Answer:

Stannic fluoride, SnF4

Explanation:

The chemical formula of Barium nitride is Ba(NO3)2.

The chemical formula of Cobaltous chloride is COCl2.

The chemical formula of Sodium Oxide is Na2O.

So the correct one is stannic fluoride, SnF4.

Answer 2

Answer:

The name and formula is paired correctly for Stannic Fluoride - $SnF_4$

Explanation:

In this case, we have four names of chemical substances and four formulas. So, we should check each one of those in order to be sure if the name and the formula are paired correctly.

First: Sodium Oxide. The formula for this oxide is $Na_2O$. The formula paired is NaO. In this case, formula and name are not correctly paired. NaO is not a chemical substance, due to the fact that Oxygen always should have -2 of valence as it was shown in the right formula $Na_2O$

Second: Cobaltous Chloride. The formula for this Chloride is $CoCl_2$. The formula paired is $CoCl_3$.

$CoCl_3$ name is Cobaltic Chloride. Taking into account both formula we can mention that formula and name are not correctly paired.

Third: Barium Nitride. The formula for this Nitride is $Ba_3N_2$. The formula paired is BaN. Formula and name are not correctly paired. BaN is not a chemical substance, Valence of elements are not coherent with the groups in the periodic table.

Finally: Stannic Fluoride. The formula for this Fluoride is $SnF_4$. The formula paired is $SnF_4$. So, this is the formula and name correctly paired.