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Periodic Table Crossword

Across
Er
What is cobalt's atomic number
Ce
What is helium's atomic number
U
Pr
What is boron's atomic number
What is thorium's atomic number
How many metal elements are their
Hf
O
Ca
Ni
Down
What is curium's atomic number
Pm
How many nonmetal elements are their
Db
What is iridium's atomic number
Ra
F
Na
Au
Li
Hg
What is hydrogen's atomic number
V
I
C
Sn
How many metalloids elements are their