Need help with these questions it's due on Friday ​

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fusion: the energy source of stars. the energy released from the collapse of the gas into a protostar causes the center of the protostar to become extremely hot. when the core is hot enough, nuclear fusion commences. fusion is the process where two hydrogen atoms combine to form a helium atom, releasing energy.

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a electronegativity decreases beacuse the size of nucleus is bigger.