Question

What are the respective formulas for iron (II) oxide and carbon tetrachloride? What is the difference?

A) Fe2O - They are both ionic.
B) FeO and CCl3 - One is ionic and the other covalent.
C) Fe2O - They both share valence electrons to complete the valence shells.
D) FeO and CCl4 - One has charges that keep the ions bonded and the other does not.

Answer 1

IRON (II) OXIDE:

-Iron (II) has ionic charge of 2+
-Oxygen has ionic charge of 2-

1. Criss cross rule gives you:
Fe2O2

2. Reduce by greatest common factor rule:
FeO—> this is Iron (II) Oxide

CARBON TETRACHLORIDE:
-Carbon has room for 4 electrons (“charge” of -4)
-Tetra=4 —> Tetrachloride= 4 chlorine atoms

Together: CCl4

Answer 2

D) FeO and CCl4 - One has charges that keep the ions bonded and the other does not.

Step-by-step explanation:

Hello,

In this case, for the iron (II) oxide, in order to know its formula, it is necessary to realize that the (II) indicates the oxidation state it has, it meas +2 from the roman number translation, in such a way, by knowing oxygen works with -2, therefore, the formula turns out:

`Fe^(+2)O^(-2)\rightarrow Fe_2O_2 \rightarrow FeO`

In addition, for carbon tetrachloride, the prefix tetra before chloride, points out there are four chlorined bonded to the carbon, that is why its formula is:

`CCl_4`

In such a way the answer is D) FeO and CCl4 - One has charges that keep the ions bonded and the other does not.

Best regards.