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`Ha` is an alphabetical symbol for

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`Ha` is an alphabetical symbol for
A. halnium
B. hassnium
C. hahnium
D. helium
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Correct Answer - C
Hafnium `(Hf)` and hassnium `(Hs)` are transition elecments. Helium `(He)` is a noble gas. `He` was the alphabetical symbol for hahnium, the element with atomic number `104` is now called rutherfordium `(Rf)`.
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