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 p4s7 n2f4 nf3 p4s3 h2o

Explanation:

For naming covalent compounds:

• The first element in the formula is named first.
• The second element is named as if it were an anion (ending with -ide).
• Prefixes are used to denote the number of each type of atom. The prefixes are: mono - 1, di - 2, tri - 3, tetra - 4, penta - 5, hexa - 6, hepta - 7, octa - 8, nona - 9, deca - 10. However, the prefix mono - is not used for the first element.

For \(P_4S_7\):

• The first element is phosphorus (\(P\)). There are 4 phosphorus atoms, so the prefix is tetra -.
• The second element is sulfur (\(S\)). There are 7 sulfur atoms, so the prefix is hepta -. The compound is named tetra - phosphorus hepta - sulfide.

For \(N_2F_4\):

• The first element is nitrogen (\(N\)). There are 2 nitrogen atoms, so the prefix is di -.
• The second element is fluorine (\(F\)). There are 4 fluorine atoms, so the prefix is tetra -. The compound is named di - nitrogen tetra - fluoride.

For \(NF_3\):

• The first element is nitrogen (\(N\)). There is 1 nitrogen atom (no prefix for the first element).
• The second element is fluorine (\(F\)). There are 3 fluorine atoms, so the prefix is tri -. The compound is named nitrogen tri - fluoride.

For \(P_4S_3\):

• The first element is phosphorus (\(P\)). There are 4 phosphorus atoms, so the prefix is tetra -.
• The second element is sulfur (\(S\)). There are 3 sulfur atoms, so the prefix is tri -. The compound is named tetra - phosphorus tri - sulfide.

For \(H_2O\):

• According to the note, for compounds containing hydrogen, the common name can be given. The common name of \(H_2O\) is water.

Answer:

• \(P_4S_7\): tetra - phosphorus hepta - sulfide
• \(N_2F_4\): di - nitrogen tetra - fluoride
• \(NF_3\): nitrogen tri - fluoride
• \(P_4S_3\): tetra - phosphorus tri - sulfide
• \(H_2O\): water