Q35.Energy of an electron is given by E = −2.178 × 10−18( Z2n2 ) J. Wavelength of light required to excite an electron in a hydrogen atom from level n=1 to n=2 will be : (h = 6.62 × 10−34 Js and c = 3.0 × 108 ms−1) (1) 6.500 × 10−7 m (2) 8.500 × 10−7 m (3) 1.214 × 10−7 m (4) 2.816 × 10−7 m
What This Question Tests
This question tests the application of Bohr's model to calculate the energy change during an electronic transition and subsequently determine the wavelength of light absorbed.
Concepts Tested
Formulas Used
ΔE = E_final - E_initial
ΔE = hc/λ
📚 NCERT Sections This Tests
12.5 — A Hydrogen Atom Initially In The Ground Level Absorbs A Photon,
Physics Class 12 · Chapter 12
12.5 A hydrogen atom initially in the ground level absorbs a photon, which excites it to the n = 4 level. Determine the wavelength and frequency of photon.
12.3 — A Difference Of 2.3 Ev Separates Two Energy Levels In An Atom. What
Physics Class 12 · Chapter 12
12.3 A difference of 2.3 eV separates two energy levels in an atom. What is the frequency of radiation emitted when the atom make a transition from the upper level to the lower level?
12.6 — (A) Using The Bohr’S Model Calculate The Speed Of The Electron In A
Physics Class 12 · Chapter 12
12.6 (a) Using the Bohr’s model calculate the speed of the electron in a hydrogen atom in the n = 1, 2, and 3 levels. (b) Calculate the orbital period in each of these levels.
📋 Question Details
- Chapter
- Atomic Structure
- Topic
- Bohr's model and energy transitions
- Year
- 2013
- Shift
- 07 Apr
- Q Number
- Q35
- Type
- MCQ
- NCERT Ref
- Class 11 Chemistry Ch 2: Atomic Structure
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