Structure of Atom – Bohr's Model, Quantum Numbers, Orbitals
Chemistry · Grade 11 · Week 5 · 25 questions
This Grade 11 chemistry chapter on Structure of Atom introduces Bohr's Model, Quantum Numbers, and Orbitals. These fundamentals show up repeatedly in NCERT exemplar problems and board questions.
What you'll practise
- Identify Bohr's Model
- Explain Quantum Numbers
- Predict Orbitals
- Apply structure of atom concepts to NCERT exercise and exemplar problems
All 25 questions in this Structure of Atom – Bohr's Model, Quantum Numbers, Orbitals quiz
Grade 11 Chemistry — Structure of Atom – Bohr's Model, Quantum Numbers, Orbitals: 25 practice questions with instant scoring and explanations.
- Bohr's first postulate: electron revolves in:
- Angular momentum of electron in Bohr orbit is:
- Energy of electron in nth Bohr orbit of H-atom:
- Radius of first Bohr orbit of H-atom is:
- Radius of nth Bohr orbit: rₙ =
- Lyman series of H-spectrum lies in:
- Balmer series lies in:
- Rydberg formula for H-atom: 1/λ =
- Value of Rydberg constant R_H:
- de Broglie wavelength: λ =
- Heisenberg's uncertainty principle: Δx·Δp ≥
- Principal quantum number n determines:
- Azimuthal quantum number l determines:
- For n = 3, allowed values of l are:
- Magnetic quantum number m_l determines:
- For l = 2 (d-orbital), number of m_l values:
- Spin quantum number m_s values:
- Shape of s-orbital is:
- Shape of p-orbital is:
- Number of orbitals in d-subshell:
- Maximum electrons in n=3 shell:
- Maximum electrons in 4f subshell:
- Nodal surface where ψ = 0 is called:
- Number of radial nodes =
- Number of angular nodes =
Question 1 of 250 correct so far