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48. Multiple Choice Question Answer XXXXVIII

1. Which of the following is the formula of sulphate ion ?

\(SO_4{^-}\)
\(SO_3{^-}\)
\(SO_2{^-}\)
\(SO^-\)

2. Which of the following has the smallest mass ?

1 atom of He
3 g of He
1 mole atoms of He
4 g of He

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