Unit 3 test review

In an ionic compound the cation always comes first.

• True

• False

What is the correct formula for magnesium phosphate?

• Mg3P2

• Mg3(PO3)2

• Mg3(PO4)2

How many valence electrons does nitrogen have?

• 3
• 2
• 5
• 1

What can be generalized about covalent bonds?

• Electrons will be exchanged.
• Electrons will be transferred.
• Electrons will be given and taken.
• Electrons will be shared.

The correct name of Fe2O3 is _

• Iron oxide

• diiron trioxide

• iron (II) oxide

• iron (III) oxide

Which of the following is the best representation of a molecule of fluorine (F₂)?

• A

• B

• C

• D

Carbon is in 4A, so how many bonds can it form based on electrons needed to fill its outer shell?

• 1

• 3

• 4

• 5

What is the correct name for NO?

• Mononitrogen Monoxide
• Nitrogen Monoxide
• Mononitrogen Dioxide
• Nitrogen Oxide

What is the formula for diphosphorus pentoxide?

• P₂O₅

• PO₅

• P₅O₂

• P₂O₆

According to the Octet Rule, atoms of elements react with each other in order to attain ____ electrons in their outermost energy level or shell.

• 2

• 4

• 6

• 8

• 10