MCQ
Given the following $K_a$ values, determine which species is the strongest base,
$HSO_4^- = 1.2 \times 10^{- 2} ,H_2PO_4^- = 6.3 \times 10^{-8} ,$$HCO_3^- = 4.7 \times 10^{-11}$
- ✓$CO_3^{2-}$
- B$H_2SO_4$
- C$SO_4^{2-}$
- D$HPO_4^{2-}$
$HSO_4^- = 1.2 \times 10^{- 2} ,H_2PO_4^- = 6.3 \times 10^{-8} ,$$HCO_3^- = 4.7 \times 10^{-11}$
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$L(1s^2, 2s^2 2p^4); Q(1s^2, 2s^2 2p^6, 3s^2 3p^5)$
$P(1s^2, 2s^2 2p^6, 3s^1); R(1s^2, 2s^2 2p^6, 3s^2)$
The formulae of ionic compounds that can be formed between these elements are