Question

fill in the missing words
a) the compound with the formula $n_2o_4$ is called
b) the compound with the formula $brcl$ is called
c) the compound with the formula $asf_5$ is called
d) the compound with the formula $p_4s_3$ is called
e) the compound with the formula $hbr(g)$ is called

Explanation:

In naming binary molecular compounds, prefixes are used to indicate the number of each type of atom present. The first element in the formula is named as the element itself, and the second element has its ending changed to -ide. Prefixes like mono - (usually not used for the first element), di -, tri -, tetra -, penta - etc. are used.

• For $N_2O_4$, there are 2 nitrogen atoms (di -) and 4 oxygen atoms (tetra -).
• For $BrCl$, bromine is the first element and chlorine is the second, with both having one atom each (mono - is not used for the first, so just bromine and mono - for the second).
• For $AsF_5$, there is 1 arsenic atom and 5 fluorine atoms.
• For $P_4S_3$, there are 4 phosphorus atoms and 3 sulfur atoms.
• For $HBr(g)$, it is a binary molecular compound of hydrogen and bromine.

Answer:

a) dinitrogen tetroxide
b) bromine monochloride
c) arsenic pentafluoride
d) tetraphosphorus trisulfide
e) hydrogen bromide