Using the periodic table, predict the formula of a compound which might be formed by the following pair of elements: silicon and bromine

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${SiBr}_{2}$

${Si}_{2} {Br}_{8}^{4 -}$

${Si}_{3} {Br}_{8}^{2 -}$

${SiBr}_{4}$

answer is B.

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Detailed Solution

Tetrabromosilane Silicon(IV) bromide be formed by the pair of elements: silicon and bromine using the periodic table, to predict the formula of a compound.

Br is more EN than Si and Br needs one electron to complete its octet, while Si needs 4. Hence, the formula of compound will be ${SiBr}_{4}$

Hence, option B is correct.

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