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Which of the following are not compounds...

Which of the following are not compounds ?
(a) Bromine gas (b) sodium chloride (c ) Magnesium
(d) Iron sulphide (e) Aluminium (f) Silver
(g) Carbon (h) Carbon dioxide (i) Sulphur powder.

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magnesium, aluminium,Silver, carbon and sulphur powder are not compounds. These are elements.
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