It's a Periodic Mystery!
Use the copy of the Periodic Table of Elements below to obtain information about each element in the Mystery Clues list. Record your information on
the Mystery Clues Data Table.
Mystery Clues:
A. This element has 12 electrons when the atom is electrically neutral.
B. This element is an alkaline-earth metals group. It has 20 protons.
C. This element has 7 electrons when the atom is electrically neutral.
D. An isotope of this element has 8 neutrons and a mass of 14.
E. This element has a chemical symbol Hg.
F. This element belongs to the same group as aluminum (AI) and has an atomic mass of 69.72.
Mystery Clues Data Table
Letter of
Mystery
Element
Atomic Number
Atomic Mass
Number of
Protons
Total Number of
Electrons when
Electrically
Neutral
Element Symbol
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