Valence Electrons, Lewis Structure, Periodic Trends

How many valence electrons are found in atoms of group 14?

• 4
• 3
• 14
• 16

Which group has the greatest number of valence electrons?

• 1
• 14
• 18
• 16

How many valence electrons are found in atoms of group 15?

• 4
• 5
• 2
• 3

What are valence electrons?

• The total number of electrons in an atom

• The number of electrons in the outermost shell

• The number of electrons in the second shell

• The number of protons in the outermost shell

The largest number of valence electrons (and the number that creates stability) is:

• 1

• 2

• 8

• 18

How many valence electrons does carbon have?

• 4

• 5

• 6

• 7

USE THE PERIODIC TABLE

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

• Magnesium - Mg

• Lithium - Li

• Aluminum - Al

• Boron - B

USE THE PERIODIC TABLE

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

• Arsenic - As

• Selenium - Se

• Calcium - Ca

• Vanadium - V

Elements in the same column of the periodic table always have the same # of _______ as one another.

• Protons
• Neutrons
• Electrons
• Valence Electrons

Is this the correct Lewis Dot Structure for Boron?

• Yes

• No, missing electrons

• No, too many electrons

• No, dots are in wrong place.