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1
(1)
What is the number of
C?
(2)
What is the number of
F?
(3)
What is the number of
H?
(4)
What is the number of
K?
(5)
What is the number of
Ar?
(6)
What is the number of
V?
(7)
What is the number of
Ti?
(8)
What is the number of
Ca?
(9)
What is the number of
Be?
(10)
What is the number of
Li?
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