MEDIUM
11th CBSE
IMPORTANT
Earn 100

Explain why it is impossible to measure simultaneously the position and velocity of a fast moving small body like an electron.

Important Questions on Structure of Atom

HARD
11th CBSE
IMPORTANT
Pradeep's Chemistry Vol 1>Chapter 2 - Structure of Atom>ADDITIONAL QUESTIONS>Q 29
State Heisenberg's uncertainty principle. Why motion of electron around the nucleus cannot be described in terms of orbits ?
HARD
11th CBSE
IMPORTANT
Pradeep's Chemistry Vol 1>Chapter 2 - Structure of Atom>ADDITIONAL QUESTIONS>Q 30
In what ways Heisenberg's uncertainty principle contradicts the concept of stationary orbit for electron as suggested by Bohr? Give the physical significance of uncertainty principle.
HARD
11th CBSE
IMPORTANT
Pradeep's Chemistry Vol 1>Chapter 2 - Structure of Atom>ADDITIONAL QUESTIONS>Q 31
What happened to Bohr's model of atom in the light of uncertainty principle? Explain the concept of 'probability'. Define 'atomic orbital'.
HARD
11th CBSE
IMPORTANT
Pradeep's Chemistry Vol 1>Chapter 2 - Structure of Atom>ADDITIONAL QUESTIONS>Q 32
What is the significance of wave function ψ in the Schrodinger wave equation? What is an atomic orbital? Why ψ is called orbital wave function?
HARD
11th CBSE
IMPORTANT
Pradeep's Chemistry Vol 1>Chapter 2 - Structure of Atom>ADDITIONAL QUESTIONS>Q 33
How are the quantum number related to each other ?
HARD
11th CBSE
IMPORTANT
Pradeep's Chemistry Vol 1>Chapter 2 - Structure of Atom>ADDITIONAL QUESTIONS>Q 34
Define Pauli exclusion principle. Why is it called exclusion principle ?
HARD
11th CBSE
IMPORTANT
Pradeep's Chemistry Vol 1>Chapter 2 - Structure of Atom>ADDITIONAL QUESTIONS>Q 35
In an atom, the first shell may contain up to 2 electrons, the second shell contain up to 8 electrons, the third shell contain up to 18 electrons and the fourth shell contains up to 32 electrons. Explain this arrangement in term of quantum numbers.
HARD
11th CBSE
IMPORTANT
Pradeep's Chemistry Vol 1>Chapter 2 - Structure of Atom>ADDITIONAL QUESTIONS>Q 36
How do 1s, 2s and 3s-orbitals differ from each other ?