Q1ChemistryUnit 2: Atomic Structure
The energy of an electron in the ground
state of atom is
The negative sign indicates that:
Chemistry · JEE
Important Questions: Bohr model of a hydrogen atom: its postulates, derivation of the relations for the energy of the electron and radii of the different orbits, limitations of Bohr's model for JEE
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Syllabus context
Part of Atomic Structure in JEE Main Chemistry.
- Nature of electromagnetic radiation, photoelectric effect, spectrum of the hydrogen atom
- Bohr model of a hydrogen atom: its postulates, derivation of the relations for the energy of the electron and radii of the different orbits, limitations of Bohr's model
- Dual nature of matter, de Broglie's relationship, Heisenberg uncertainty principle
- Elementary ideas of quantum mechanics, the quantum mechanical model of the atom and its important features
- Concept of atomic orbitals as one-electron wave functions, variation of Psi and Psi^2 with r for 1s and 2s orbitals
- Various quantum numbers (principal, angular momentum and magnetic quantum numbers) and their significance
- Shapes of s, p and d orbitals, electron spin and spin quantum number
- Rules for filling electrons in orbitals: Aufbau principle, Pauli's exclusion principle and Hund's rule
- Electronic configuration of elements and extra stability of half-filled and completely filled orbitals
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Attempt 8 free MCQs for Bohr model of a hydrogen atom: its postulates, derivation of the relations for the energy of the electron and radii of the different orbits, limitations of Bohr's model. Unlock 49+ more with Pro.
Q2ChemistryUnit 2: Atomic Structure
The wavelength of the radiation emitted
when an electron falls from Bohr orbit 4
to 2 in hydrogen atom is:
Q3ChemistryUnit 2: Atomic Structure
Which of the following statements
about Rutherford's model of an atom
are correct?
This question has multiple correct options
Q4ChemistryUnit 2: Atomic Structure
An atomic hydrogen is:
Q5ChemistryUnit 2: Atomic Structure
The radius of the stationary state which is also called Bohr radius is given by the
expression where the value
of is:
Q6ChemistryUnit 2: Atomic Structure
Assertion
To overcome electrostatic force of
attraction between electrons and
nucleus, they revolve around the
nucleus
Reason
Mass of the atom is almost due to its
nucleus
Q7ChemistryUnit 2: Atomic Structure
In 1909 discovered
nucleus in his famous gold foil experiment.
Q8ChemistryUnit 2: Atomic Structure
Assertion
Bohr proposed that angular momentum of electron in an orbit is quantized.
Reason
Debroglie derived that
Read the above assertion and reason
and choose the correct option regarding
¡t.
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