Question

write the chemical formula of aluminium oxide sodium sulphate calcium nitrate by cross cross method
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Answer 1

Answer:

Aluminium oxide - Al2O3

Sodium sulfate- Na2SO4

Calcium nitrate -Ca(NO3)2

Answer 2

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${\bf{\implies Al_2O_3}}$

${\bf{\implies Na_2SO_4}}$

${\bf{\implies Ca(NO_3)_2}}$