Choose the correct balanced equation(s) along with reactant and products :

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$2 {BF}_{3} + 6 NaH ⟶ B_{2} H_{6} + 6 NaF$

$2 {NaBH}_{4} + I_{2} ⟶ B_{2} H_{6} + 2 NaI + H_{2}$

$3 {NaBH}_{4} + 4 {BF}_{3} \cdot {OEt}_{2}$ $⟶ 2 B_{2} H_{6} + 3 {NaBF}_{4} + 4 {Et}_{2} O$

All of the above

answer is D.

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Detailed Solution

The inclusion of stoichiometric coefficients to the reactants and products is necessary to balance chemical equations. This is significant because a chemical equation must adhere to the laws of conservation of mass and constant proportions, meaning that both the reactant and product sides of the equation must include the same amount of atoms of each element.

$3 {NaBH}_{4} + 4 {BF}_{3} \cdot {OEt}_{2} \to 2 B_{2} H_{6} + 3 {NaBF}_{4} + 4 {Et}_{2} O$ $2 {BF}_{3} + 6 NaH ⟶ B_{2} H_{6} + 6 NaF$ $2 {NaBH}_{4} + I_{2} ⟶ B_{2} H_{6} + 2 NaI + H_{2}$