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If a metal R forms a compound with the formula R(NO3

If a metal R forms a compound with the formula R(NO3)2 the formula of its tetraoxosulphate (VI) is

A.

R(SO4)2

B.

RSO4

C.

R2SO4

D.

R2(SO4)3

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Correct answer is B

No explanation has been provided for this answer.

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