Q10 / 90 · JEE Main 2021 (27 Jul Shift 1) · Chemistry
Given below are two statements :
Statement I : Rutherford's gold foil experiment cannot explain the line spectrum of hydrogen atom. Statement II : Bohr's model of hydrogen atom contradicts Heisenberg's uncertainty principle. In the light of the above statements, choose the most appropriate answer from the options given below:
Statement I : Rutherford's gold foil experiment cannot explain the line spectrum of hydrogen atom. Statement II : Bohr's model of hydrogen atom contradicts Heisenberg's uncertainty principle. In the light of the above statements, choose the most appropriate answer from the options given below:
- AStatement is false but statement is true.
- BStatement is true but statement is false.
- CBoth statement and statement are false.
- Correct answerDBoth statement and statement are true.
Solution
Rutherford's gold foil experiment only proved that electrons are held towards nucleus by electrostatic forces of attraction and move in circular orbits with very high speeds.
Bohr's model gave exact formula for simultaneous calculation of speed distance of electron from the nucleus, something which was deemed impossible according to Heisenberg.
Hence, the correct answer is option: 'D'.