There is no energy available to transfer to the surroundings when bonds break as it's an endothermic reaction.
<h3>What is Endothermic reaction?</h3>
This is the type of reaction in which heat is absorbed from the surrounding and is involved in the breaking of bonds.
There is no energy available to transfer to the surroundings when bonds break because it's needed in the conversion of the reactant to product in a chemical reaction.
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A and B are most closely on the diagram because if you look at A and D is on another side of the diagram than A is. B is on the same side as A. According to “Present time” A B and D are at the top of a arrow but it seems B is a little further down from the arrow if you look closely. This doesn’t change the fact that it’s closer to A.
Answer:
Silicon
Explanation:
A period is the horizontal row of elements on the periodic table.