The elements P,Q,R belong to the same period .the sulphate of P is PSO4,the nitrate of Q is Q(NO3)3 , and the carbonate of R is R2CO3
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Explanation:
Along a period, acidic nature of oxide increases.
Down the group, basic nature of oxide increases and while electronegativity decreases.
S is most electropositive as metal oxides/hydroxide are basic and non-metal oxides/hydroxides are acidic.
P → Acidic (Nonmetal)
Q → Amphoteric
R → Amphoteric
S → Basic (Metal)
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