Question

molecular formula\tmolecule name
pbr₃
scl₄
n₂f₂
so₃
brf

1. write molecular formulas for the following compounds.

molecular formula\tmolecule name
disulfur decafluoride
carbon tetrachloride
oxygen difluoride
dinitrogen trioxide
tetraphosphorus heptasulfide

Explanation:

Step1: Naming of molecular compounds

For naming molecular compounds, prefixes are used to indicate the number of each type of atom. For example, "di -" means 2, "tri -" means 3, "tetra -" means 4, "penta -" means 5, "hexa -" means 6, "hepta -" means 7, "octa -" means 8, "nona -" means 9, "deca -" means 10.

Step2: Naming \(PBr_{3}\)

The prefix for 1 (usually omitted for the first element if there is 1) for \(P\) (phosphorus) and "tri -" for 3 \(Br\) (bromine) atoms. So it is phosphorus tribromide.

Step3: Naming \(SCl_{4}\)

The prefix for 1 (omitted) for \(S\) (sulfur) and "tetra -" for 4 \(Cl\) (chlorine) atoms. So it is sulfur tetrachloride.

Step4: Naming \(N_{2}F_{2}\)

The prefix "di -" for 2 \(N\) (nitrogen) atoms and "di -" for 2 \(F\) (fluorine) atoms. So it is dinitrogen difluoride.

Step5: Naming \(SO_{3}\)

The prefix for 1 (omitted) for \(S\) (sulfur) and "tri -" for 3 \(O\) (oxygen) atoms. So it is sulfur trioxide.

Step6: Naming \(BrF\)

The prefix for 1 (omitted) for \(Br\) (bromine) and "mono -" (but "mono -" is omitted for the first element, but here for the second element when there is 1, we can just say bromine monofluoride)

Step7: Writing formula for Disulfur decafluoride

"Di -" for 2 \(S\) (sulfur) and "deca -" for 10 \(F\) (fluorine). So formula is \(S_{2}F_{10}\)

Step8: Writing formula for Carbon tetrachloride

"Carbon" (\(C\)) and "tetra -" for 4 \(Cl\) (chlorine). So formula is \(CCl_{4}\)

Step9: Writing formula for Oxygen difluoride

"Oxygen" (\(O\)) and "di -" for 2 \(F\) (fluorine). So formula is \(OF_{2}\)

Step10: Writing formula for Dinitrogen trioxide

"Di -" for 2 \(N\) (nitrogen) and "tri -" for 3 \(O\) (oxygen). So formula is \(N_{2}O_{3}\)

Step11: Writing formula for Tetraphosphorus heptasulfide

"tetra -" for 4 \(P\) (phosphorus) and "hepta -" for 7 \(S\) (sulfur). So formula is \(P_{4}S_{7}\)

Answer:

Molecular Formula	Molecule Name
\(SCl_{4}\)	sulfur tetrachloride
\(N_{2}F_{2}\)	dinitrogen difluoride
\(SO_{3}\)	sulfur trioxide
\(BrF\)	bromine monofluoride
\(S_{2}F_{10}\)	Disulfur decafluoride
\(CCl_{4}\)	Carbon tetrachloride
\(OF_{2}\)	Oxygen difluoride
\(N_{2}O_{3}\)	Dinitrogen trioxide
\(P_{4}S_{7}\)	Tetraphosphorus heptasulfide