What is believed to be the second most common | vedclass

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(A) The most abundant element in the universe is $Hydrogen$ $(H)$,accounting for approximately $75\%$ of the baryonic mass. The second most abundant e

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$Helium$

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(A) The most abundant element in the universe is $Hydrogen$ $(H)$,accounting for approximately $75\%$ of the baryonic mass. The second most abundant element is $Helium$ $(He)$,which accounts for approximately $24\%$ of the baryonic mass.

What is believed to be the second most common element in the universe?

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