- How many dots would be used for the electron-dot structure of carbon?
Your answer:
2
8
4
6
- Indicate the number of electrons lost or gained by calcium and give the charge of the ion it forms.
Your answer:
Loses 2 electrons to form a calcium ion with 2- charge
Gains 2 electrons to form a calcium ion with 2- charge
Loses 2 electrons to form a calcium ion with 2+ charge
Gains 2 electrons to form a calcium ion with 2+ charge
- How does chlorine form an ion?
Your answer:
Loses 1 electron to form Cl- ion
Loses 1 electron to form Cl+ ion
Gains 1 electron to form Cl- ion
Gains 1 electron to form Cl+ ion
- When is the charge of the ions formed by the alkali metals?
Your answer:
1-
2-
1+
2+
- What is the formula of the ion that has 16 protons and 18 electrons?
Your answer:
Ar2+
S2-
Ar2-
S2+
- What is the correct formula for the compound containing aluminum ions and chloride ions?
Your answer:
3AlCl
AlCl3
Al3Cl
AlCl
- What is the correct formula for the ionic compound formed between potassium and oxygen?
Your answer:
K2O
2KO
KO
KO2
- What is the correct name of an ionic compound of Fe2+ and Cl-?
Your answer:
iron (III) chloride
iron chloride
iron (I) chloride
iron (II) chloride
- What is the formula of iron(III) oxide?
Your answer:
FeO
Fe3O
Fe3O2
Fe2O3
- What type of compound is N2O4 and what is its name?
Your answer:
covalent, dinitrogen tetroxide
ionic, dinitrogen tetroxide
covalent, dinitrogen oxide
ionic, nitrogen oxide
- The formula of phosphorus trichloride is
Your answer:
P3Cl
PCl3
KCl
PCl
- In a nonpolar covalent bond, the electrons in the bond are
Your answer:
shared equally
gained
shared unequally
lost
- The bond between sulfur (electrongativity value 2.5)and chlorine (electrongativity value 3.0) is
Your answer:
polar covalent
nonpolar covalent
ionic
not formed
- Some ionic compounds contain polyatomic ions, which are groups of atoms with an electrical charge. The formula of calcium nitrate is
Your answer:
Ca(NO3)2
Ca2(NO3)
CaNO3
Ca3N2
- The name of the compound FeCO3 is
Your answer:
iron(II) carbonate
iron(II) carbon trioxide
iron(II) carbide
iron carbonate