Chapter 5 Mastery Check

What are valence electrons?

• Electrons in the nucleus of an atom.

• Electrons in the middle energy level of an atom.

• Electrons in the outermost energy level of an atom.

• Electrons in the innermost energy level of an atom.

What is the octet rule?

• Atoms tend to gain, lose, or share electrons in order to have a full inner shell of eight electrons.
• Atoms tend to gain, lose, or share electrons in order to have a full outer shell of six electrons.
• Atoms tend to gain, lose, or share electrons in order to have a full outer shell of ten electrons.
• Atoms tend to gain, lose, or share electrons in order to have a full outer shell of eight electrons.

Write the electron dot structures for the following elements:

bromine

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Write the electron dot structures for the following elements:

S

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What charge would each element obtain when it becomes an ion? d) iodine

• 0
• -1
• +1
• +2

Name the following ionic compounds. a) Na³N

• sodium nitoide

• Magnesium Bromide

• oxygen carboide

Write the electron dot structures for the following elements :

Al

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• 
• 

Name the following ionic compound: CaO

• calcium carbonate
• calcium chloride
• calcium hydroxide
• calcium oxide

Name the following ionic compound: InCl3

• Indium trichloride
• Indium(III) chloride
• Indium(III) trichloride

What charge would each element obtain when it becomes an ion: lithium

• +1
• 0
• +2
• -1