Q1ChemistryUnit 2: Atomic Structure
Uncertainity in position of a particle of in space is Determine
uncertainity in velocity in it. (plank's constant, )
Chemistry · JEE
Dual nature of matter, de Broglie's relationship, Heisenberg uncertainty principle Short Tricks for JEE
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NCERT line recall
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Balance then compare
In Physical Chemistry numericals, write the balanced relation first, then substitute values with units.
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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Q2ChemistryUnit 2: Atomic Structure
An electron in -atom in ground state
absorbs 1.5 times as much energy as the minimum required for its escape (i.e., from the atom. Calculate
the wavelength of emitted electron.
Q3ChemistryUnit 2: Atomic Structure
Assertion
According to de Broglie, the wavelengths associtated with electrons and other subatomic particles can be
detected experimentally.
Reason
The wavelength associated with any material particle is directly proportional
to its mass.
Q4ChemistryUnit 2: Atomic Structure
If the following matter waves travel with equal velocity, the longest wavelength is that of a/an:
Q5ChemistryUnit 2: Atomic Structure
If the kinetic energy of a particles is reduced to half, de broglie wave length becomes:
Q6ChemistryUnit 2: Atomic Structure
The uncertainty in position of an electron moving
with a velocity accurate
upto will be:
Q7ChemistryUnit 2: Atomic Structure
The wave length of an electron wave is inversely proportional to and
Q8ChemistryUnit 2: Atomic Structure
The uncertainty (in meters) in the position of an insect weighing and traveling at a velocity of (the uncertainty in the velocity is 0.1 is:
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Popular questions in Dual nature of matter, de Broglie's relationship, Heisenberg uncertainty principle
- Uncertainity in position of a particle of \( 25 \mathrm{g} \) in space is \( 10^{-15} \mathrm{m} . \) Determine uncertai…
- Assertion According to de Broglie, the wavelengths associtated with electrons and other subatomic particles can be detec…
- Uncertainity in position of a particle of \( 25 \mathrm{g} \) in space is \( 10^{-15} \mathrm{m} . \) Determine uncertai…
- Assertion According to de Broglie, the wavelengths associtated with electrons and other subatomic particles can be detec…
- The thermal motion means…
- An electron in \( H \) -atom in ground state absorbs 1.5 times as much energy as the minimum required for its escape (i.…
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