Question

fill in the systematic names of the following chemical compounds.
note: for compounds containing hydrogen, you may give the common name instead.

molecular formula	name of compound
co₂
br₂o
bro₂
nh₃

Explanation:

To solve this, we name each molecular compound using systematic naming (prefixes for molecular compounds):

For \( \boldsymbol{\text{CO}} \):

• Contains carbon (C) and oxygen (O). The prefix for 1 (mono-) is used for the second element (except if first element is 1, we omit mono- for first).
• Name: carbon monoxide

For \( \boldsymbol{\text{CO}_2} \):

• Carbon (C) and oxygen (O, 2 atoms → prefix “di-”).
• Name: carbon dioxide

For \( \boldsymbol{\text{Br}_2\text{O}} \):

• Bromine (Br, 2 atoms → prefix “di-”) and oxygen (O, 1 atom → prefix “mono-”).
• Name: dibromine monoxide

For \( \boldsymbol{\text{BrO}_2} \):

• Bromine (Br, 1 atom → no prefix) and oxygen (O, 2 atoms → prefix “di-”).
• Name: bromine dioxide

For \( \boldsymbol{\text{NH}_3} \):

• Common name is ammonia (systematic name: nitrogen trihydride, but ammonia is widely accepted).

Molecular Formula	Name of Compound
\( \text{CO}_2 \)	Carbon Dioxide
\( \text{Br}_2\text{O} \)	Dibromine Monoxide
\( \text{BrO}_2 \)	Bromine Dioxide
\( \text{NH}_3 \)	Ammonia (Nitrogen Trihydride)

(Note: For \( \text{NH}_3 \), “ammonia” is the common name; the systematic name is nitrogen trihydride, but “ammonia” is more commonly used.)

Answer:

To solve this, we name each molecular compound using systematic naming (prefixes for molecular compounds):

For \( \boldsymbol{\text{CO}} \):

• Contains carbon (C) and oxygen (O). The prefix for 1 (mono-) is used for the second element (except if first element is 1, we omit mono- for first).
• Name: carbon monoxide

For \( \boldsymbol{\text{CO}_2} \):

• Carbon (C) and oxygen (O, 2 atoms → prefix “di-”).
• Name: carbon dioxide

For \( \boldsymbol{\text{Br}_2\text{O}} \):

• Bromine (Br, 2 atoms → prefix “di-”) and oxygen (O, 1 atom → prefix “mono-”).
• Name: dibromine monoxide

For \( \boldsymbol{\text{BrO}_2} \):

• Bromine (Br, 1 atom → no prefix) and oxygen (O, 2 atoms → prefix “di-”).
• Name: bromine dioxide

For \( \boldsymbol{\text{NH}_3} \):

• Common name is ammonia (systematic name: nitrogen trihydride, but ammonia is widely accepted).

Molecular Formula	Name of Compound
\( \text{CO}_2 \)	Carbon Dioxide
\( \text{Br}_2\text{O} \)	Dibromine Monoxide
\( \text{BrO}_2 \)	Bromine Dioxide
\( \text{NH}_3 \)	Ammonia (Nitrogen Trihydride)

(Note: For \( \text{NH}_3 \), “ammonia” is the common name; the systematic name is nitrogen trihydride, but “ammonia” is more commonly used.)