Q1ChemistryUnit 2: Atomic Structure
The nucleus of the atom consists of:
Chemistry · JEE
Concept of atomic orbitals as one-electron wave functions, variation of Psi and Psi^2 with r for 1s and 2s orbitals Previous Year Questions 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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Q2ChemistryUnit 2: Atomic Structure
If an atom contains one electron and
one proton, what charge will it carry?
Q3ChemistryUnit 2: Atomic Structure
Atoms of different elements having the same mass number are known as:
Q4ChemistryUnit 2: Atomic Structure
Isobars have same mass numbers
becausetheir nuclei contain
equalnumber of
Q5ChemistryUnit 2: Atomic Structure
The number of nodes of s orbital
increases with
Q6ChemistryUnit 2: Atomic Structure
All of the following are true about ion
EXCEPT:
Q7ChemistryUnit 2: Atomic Structure
discovered an
electrically neutral particle in the atom named as neutron.
Q8ChemistryUnit 2: Atomic Structure
For which of the following orbital wave function does not change from positive to negative at any distance from
nucleus?
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