Which describes the pattern of these elements on the periodic table?

• They are in order of importance
• They are in order by their atomic number

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Which is true about L and M?

• M has 2 more electrons in its outer shell than L
• L and M are in the same group

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In the periodic table, 

• R is just above Q
• Q is just above R

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Use your periodic table to find how many protons are in Clorine (Cl)?

• 6

• 20

• 17

• 2

Which is the element?

• Al
• H2O2
• LiF
• N2O4

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The picture pattern indicates which of the following on the periodic table?

• A group
• A period

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Which describes the pattern of these elements on the periodic table?

• They are arranged by the number of valence electrons they have

• They are arranged by atomic number

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The period for Bromine is ___________.

• 3
• 2
• 4

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Beryllium is in group number______.

• Group 2
• Group 3
• Group 4
• Group 7

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How many valence electrons are in this atom?

• 3

• 7

• 17

• 8

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