22.6k views
3 votes
Consider the following formulas and names. explain what is wrong with each name chapter 3

Consider the following formulas and names. explain what is wrong with each name chapter-example-1
User Sam Adams
by
7.3k points

1 Answer

6 votes

Names ought to be:

a. Iron(II) bromide.

b. Carbon disulfide.

c. Cobalt(III) nitrate.

d. Magnesium hydroxide.

e. Copper(I) oxide.

See the explanation for why the names given are not appropriate.

Step-by-step explanation

Metals and nonmetals tend to form ionic compounds when the two combine. Metals may also combine with polyatomic ions like
\text{NO}_3^(-) to produce an ionic compound. a, c, d, and e are all ionic compounds. Names for ionic compounds should not include numerals such as "di-" or "tri-". Also, indicate the oxidation state for transition elements using Roman numerals in brackets.

The name in a is not correct since:

  • Iron Fe is a transition element. Its oxidation state is missing.
  • There's a prefix in front of "bromide" despite FeBr₂ is an ionic compound.

The name in b is not correct since:

  • C stands for carbon. Cu is the symbol for copper.
  • CS₂ is a covalent compound between two nonmetals. The prefix that indicates the number of sulfur atoms in the molecule is missing.

The name in c is not correct since:

  • Cobalt Co is a transition element. Its oxidation state is missing.
  • There's a prefix in front of "nitrate" despite Co(NO₃)₂ is an ionic compound.

The name in d is not correct since:

  • There's a prefix in front of "hydroxide" despite Mg(OH)₂ is an ionic compound.

The name in e is not correct:

  • There's a prefix in front of "copper" despite Cu₂O is an ionic compound.
  • The oxidation state for copper in Cu₂O should be +1 rather than +2.
User Shoaib Nomani
by
6.7k points