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P Block Elements question

2010 · Shift 2 · Q8
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P Block Elements question

2010 · Shift 2 · Q8

JEE AdvancedChemistryP Block ElementsNumerical+2 / −1
The total number of diprotic acids among the following is: H3PO4H_3PO_4H3​PO4​, H2SO4H_2SO_4H2​SO4​, H3PO3H_3PO_3H3​PO3​, H2CO3H_2CO_3H2​CO3​, H2S2O7H_2S_2O_7H2​S2​O7​, H3BO3H_3BO_3H3​BO3​, H3PO2H_3PO_2H3​PO2​, H2CrO4H_2CrO_4H2​CrO4​ and H2SO3H_2SO_3H2​SO3​
Numerical answer
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