What does the name iron(II) in a compound indicate about the cation?
A
an 11+ charge
B
a 2– charge
C
a 2+ charge

the roman numeral represents the charge on the cation

Explanation:

The answer to your question is the letter C. 2+ charge

Explanation:

When we write transition metals, after the name with a roman number we write the oxidation number of that metal.

Metals have a positive oxidation number.

Then, if we have the name Iron (II) that means   Fe⁺²

It means that Iron has an oxidation number of +2.

a. they are both space stations

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a. the law of proportion states the combination of 2 atoms in a specific ratio to produce multiple compounds such as the given statement of question ‘1st compound contains 88.8 % cu ’ indicates 88.8 g of cu is present along with 11.2 g oxygen in 100 g of compound whereas the statement ‘2st compound contains 79.9 % cu ’ indicates 79.9 g of cu is present along with 20.1 g oxygen in 100 g of compound

1st compound contains 88.8 g cu

for cu

m = 63 g /mol

atomic % = 88.8 /63 = 1.42

for o

m = 16 g /mol

atomic % = 11.2 /16 = 0.7

b. the emperical formula of 1st compound is

cu1.4o0.7

cu2o