The question is incomplete, here is the complete question:
Two isotopes of hydrogen fuse to form a neutron plus the larger element,
A) beryllium
B) carbon
C) deuterium
D) helium
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Answer: The larger element formed by the nuclear fusion of two isotopes of hydrogen is Helium.
Explanation:
Nuclear fusion reactions are defined as the reaction in which, two or more lighter atoms combine to form a heavier atom. The number of atoms formed in this reaction decreases from the given atoms.
The nuclear fusion equation for the reaction of H-2 and H-3 isotope is:
[tex]_1^2\textrm{H}+_1^3\textrm{H}\rightarrow _2^4\textrm{He}+n[/tex]
In a nuclear reaction, total atomic number and total mass number remains the same
Hence, the larger element formed by the nuclear fusion of two isotopes of hydrogen is Helium.