Martije has made a slight error in naming a compound monocarbon tetrabromide. what compound is she most likely naming, and what is its correct name?

The slight error has been to use the prefix mono to name monocarbon.

The compound she is most likely naming is:

 .

As you see, the chemical formula has 1 atom of C, which is likely why she named it mono, and 4 atoms of Br.

The right name is carbon monobromide, i.e. you have to supress the prefix mono, as per IUPAC rules.

Bromine has atomic number  35  which means there are  35 protons  and  44  neutrons to give a total of 79 nucleons. the fact that it's a positive ion means that it has lost an electron; so there'll be  34 electrons. 

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