Using the periodic table, predict the formulas of compounds which might be formed by the following pairs of elements:
(a) silicon and bromine
(b) aluminium and suplhur.

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Solution

$S i$ is tetravalent while $B r$ is monovalent so the compound formed would be $S i B r_{4}$ .
$A l$ is trivalent while $S$ is bivalent so the compound formed would be $A l_{2} S_{3}$

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Using the periodic table, predict the formulas of compounds which might be formed by the following pairs of elements:(a) silicon and bromine (b) aluminium and suplhur.

Si is tetravalent while Br is monovalent so the compound formed would be SiBr4.Al is trivalent while S is bivalent so the compound formed would be Al2S3

Using the periodic table, predict the formulas of compounds which might be formed by the following pairs of elements:
(a) silicon and bromine
(b) aluminium and suplhur.

$S i$ is tetravalent while $B r$ is monovalent so the compound formed would be $S i B r_{4}$ .
$A l$ is trivalent while $S$ is bivalent so the compound formed would be $A l_{2} S_{3}$