Describe why such an enormous amount of energy is required to initiate a fusion reaction.

the answer is a for sure mark brainliest i had got this right on usatestprep

ca has a crystalline lattice with positive ions (since it is a metal, metals are positively charged) and electrons flow freely in its structure since the ca atoms have a large nuclear radius so the electrons are not tightly held, therefore the electrons can flow freely since they are not being highly attracted by the nucleus. moreover, one of the properties of metals are that they are conductors of electricity, thus proving ca is the element.

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the correct answer would be b) volume versus temperature, because they are also directly proportional.