What is the third step of the hydrogen fusion process?
Answer
A
1 squared cap h plus 1 to the 1th power cap h rightarrow 2 cubed He plus energy
B
6 times open paren 1 to the 1th power cap h close paren plus 2 times open paren negative 1 to the 0 power e close paren rightarrow 2 to the 4th power He plus 2 times open paren 1 to the 1th power cap h close paren plus energy plus 2 v
C
1 to the 1th power cap h plus 1 to the 1th power cap h rightarrow 1 squared cap h plus e raised to the plus plus v power plus energy
D
2 cubed He plus 2 cubed He rightarrow 2 to the 4th power He plus 2 times open paren 1 to the 1th power cap h close paren plus energy
Explanation
In the proton–proton chain, the third step combines two helium-3 nuclei. They form one helium-4 nucleus and release two protons and energy, which matches choice A.
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