Answer:
see explanation
Explanation:
HNO₂ ⇄ H⁺ + NO₂⁻
Ka = [H⁺][NO₂⁻]/[HNO₂]
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Helium
He- 3.99739969150064 (4)
S-0.498986433806336 (0.5)
Li-3.02550064832148 (3)
B-2.959948200906496 (3)