Ionic & Covalent Bonding Chapter 4 Exam

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Valence electrons are the...

• Innermost electrons
• Middle electrons
• Outermost electrons
• Any electrons

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USE THE PERIODIC TABLE

How many valence electrons does Phosphorus have?

• 31

• 5

• 15

• 4

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USE THE PERIODIC TABLE

Find the element that has 3 Valence Electrons and 2 energy levels.

• Magnesium - Mg

• Lithium - Li

• Aluminum - Al

• Boron - B

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USE THE PERIODIC TABLE

Find the element that has 5 Valence Electrons and 4 energy levels.

• Arsenic - As

• Selenium - Se

• Calcium - Ca

• Vanadium - V

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Is this the correct Lewis Dot Structure for Boron?

• Yes

• No, missing electrons

• No, too many electrons

• No, dots are in wrong place.

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This could be the dot diagram of

• Mg

• Cl

• C

• O

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What is the goal of the Lewis Dot Structure?

• To determine the electron position.

• To show the element's valence electrons & bonding capabilities.

• To find the atomic mass of an element.

• To search for the number of electrons in an individual atom.

This is a correct dot diagram for neon (Ne)

• true

• false

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