Who gave the theory of ionisation?
Show Hint
- Faraday
- Arrhenius
- Ostwald
- Rutherford
The Correct Option is B
Solution and Explanation
Svante Arrhenius developed the theory of ionisation in 1887, explaining that when certain substances dissolve in water, they dissociate into ions, and this dissociation is what leads to electrical conductivity. Step 2: Analysis of options.
(A) Faraday: Faraday contributed to the understanding of electrolytic processes but did not develop the theory of ionisation.
(B) Arrhenius: Correct — Arrhenius is known for developing the theory of ionisation, describing the dissociation of substances into ions in solution.
(C) Ostwald: Ostwald worked on the dissociation of weak electrolytes but is not credited with the original theory of ionisation.
(D) Rutherford: Rutherford is famous for his work on the structure of the atom, not for the theory of ionisation.
Step 3: Conclusion.
The correct answer is (B) because Svante Arrhenius developed the theory of ionisation.
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