What heavier element is created when hydrogen atoms fuse together in the sun’s core?

Helium is created from hydrogen in the sun's core.

Four hydrogen-1 nuclei fuse to produce

Explanation:

Step One:

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Two hydrogen-1 nuclei fuse. One proton will convert to a neutron. The products will be

Step Two:

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There are plenty of hydrogen-1 nuclei available in the core of the sun. The hydrogen-2 nucleus from step one will fuse with a hydrogen-1 nucleus. The product is

Step Three

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Two helium-3 nuclei from step two react with each other. The products are:

The overall reaction will be:

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In other words, hydrogen nuclei in the core of the sun fuse together to form helium.

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.