Dalton's atomic theory successfully explained:
i. Law of conservation of mass
ii. Law of constant composition
iii. Law of radioactivity
iv. Law of multiple proportion
- Aii, iii and iv
- Bi, ii and iii
- Ci, ii and iv
- Di, iii and iv
Show answer and explanation
Correct answer: (c) i, ii and iv
Explanation
Dalton's atomic theory treats atoms as indivisible and indestructible, explaining the Law of conservation of mass (i).
Fixed atom ratios in a compound explain the Law of constant composition (ii); whole-number mass ratios explain the Law of multiple proportions (iv).
It does not explain radioactivity (iii), which was discovered much later.