Multiple choice

Which of the following is a wrong combination?

  1. Hydrogen - H

  2. Sulphur - S

  3. Helium - H2

  4. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Helium's chemical symbol is He, not H2. H2 represents hydrogen gas (two hydrogen atoms bonded together). The question asks for the WRONG combination, and Helium-H2 is indeed incorrect because H2 belongs to hydrogen, not helium.

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