Voluntary Review (Periodic Table)

Which is an electron?

• A
• B
• C

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How many valence electrons does Tin (Sn) have?

• 8

• 7

• 5

• 4

How many valence electrons does Lithium (Li) have?

• 8

• 1

• 5

• 2

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What is a valence electron?

• an electron that is found in the outermost shell of an atom. 
• an electron found in the innermost shell of an atom.
• an electron found in the middle shell.

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The first ever usable modern periodic table was developed by

• Dmitri Mendeleev

• Glenn Seaborg

• John Newlands

• Henry Moseley

How are the elements arranged on the periodic table currently?

• By atomic mass

• By number of electrons

• By atomic number

• By alphabetic order

What property did Mendeleev use to organize his periodic table, at first?

• Atomic Number

• Color

• Reactivity

• Atomic Weight

What property do we organize the periodic table by now?

• Atomic Number

• Color

• Reactivity

• Atomic Weight

Which group are the Alkali Metals found? 

• Group 1
• Group 6
• Group 18
• Group 13

Which is not a Alkali Metal?

• Lithium
• Sodium
• Gold
• Potassium