Periodic Table of elements

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117274
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20
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Helium is

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He



117284
0
20
none
117286
0
20
none
117288
0
20
none
117289
0
20
none
117301
0
20
none
117302
0
20
none
117842
0
20
none
117851
0
20
none
117863
0
20
none