Question

A certain compound is made up of one phosphorus (p) atom, three fluorine (f) atoms, and one oxygen (o) atom. what is the chemical formula of this compound?

Answer 1

In this item, we are given with the number of atoms of the given elements that would comprise the compound. The chemical formula of a certain compound is usually written with the chemical symbol of the element and then the count (or number) as a subscript. In this regard, the formula for the compound would have to be,

     PF₃O

This compound is known as the PHOSPHORUS FLUORIDE OXIDE. 

Answer 2

POF₃

Further explanation

A certain compound is made up of one phosphorus (P) atom, three fluorine (F) atoms, and one oxygen (O) atom.

Question:

What is the chemical formula of this compound?

The process:

The chemical formula of a compound states the type and the relative number of atoms contained in the substance.

• Element symbols are written with capital letters, in this case, P, O, and F.
• But if in other cases, these elements, for example, sodium or iron, the first letter is capital while the second letter is lowercase. Here is the writing: $\boxed{ \ sodium = Na; \ iron = Fe \ }$
• We can add the number of atoms present as a subscript and it applies to three fluorines.

As follows, the chemical formula of this compound is $\boxed{\boxed{ \ POF_3 \ }}$

The names of these compounds are as follows:

• Phosphoric trifluoride
• Phosphoryl fluoride
• Phosphorus oxyfluoride

Notes:

• POF₃ is a colorless and similar gas to POCl₃ or POBr₃. Remember that F, Cl, Br are included in the halogen group.
• The molecular shape of POF₃ is tetrahedral with a bond angle of 103°.

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Keywords: chemical compound, phosphorus, fluorine, oxygen, P, F, O, POF₃ molecular shape, tetrahedral, bond angle, halogens, colorless gas, element symbols, capital letter, lowercase, subscript