Question

Write the formula of compounds which are formed by the following pairs of elements.
Silicon and bromine
Aluminium and sulphur

Answer 1

(a) SiBr4 : Silicon tetra bromide
(b) Al2(SO4)3 : Aluminium sulphate..

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Answer 2

Dear student,

● Answer -
Silicon + bromine => SiBr4
Aluminium + sulphur => Al2S3

● Explaination -
(1) Silicon + Bromine -
Silicon on reaction with bromine gives silicon bromide with molecular formula SiBr4.
Si + 2Br2 --> SiBr4

(3) Aluminum + Sulphur -
Aluminum on reaction with sulphur gives aluminum sulphide with molecular formula Al2S3.
2Al + 3S --> Al2S3

Hope this helped you.
Thanks for asking..