Structure of Atom

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What is the maximum number of electrons that can occupy an orbital in an atom?

2 (correct)
6
4
1

Which of the following rules is used to predict the energy of an orbital in an atom?

Hund's Rule
Aufbau Principle
Pauli's Exclusion Principle
(n+l) Rule (correct)

What is the shape of the 3d orbital in an atom?

Peanut
Dumbbell
Four-leaf clover (correct)
Spherical

Which of the following elements has an unexpected electronic configuration?

Copper (D) Signup and view all the answers

What is the orientation of the 4f orbital in an atom?

Along the z-axis (C) Signup and view all the answers

What is the primary reason for the extra stability of half-filled and completely filled subshells?

Symmetrical distribution of electrons (B) Signup and view all the answers

What type of energy is released during the exchange of electrons in degenerate orbitals?

Exchange energy (C) Signup and view all the answers

What is the configuration of Cr that contributes to its extra stability?

1s 2 2 s 2 sp 6 3 s 2 3 p 6 4 s 1 3d 5 (A) Signup and view all the answers

What is the Hund's Rule explanation for the extra stability of half-filled and completely filled subshells?

Electrons with parallel spins in degenerate orbitals tend to exchange their position (A) Signup and view all the answers

What is the primary difference between isotopes and isobars?

Number of neutrons (D) Signup and view all the answers

What is the orientation of the F-orbital in an atom?

Dumbbell shape (C) Signup and view all the answers

What determines the position of an element in the periodic table?

Number of protons (C) Signup and view all the answers

What do isodiaphers have in common?

Same atomic number and mass number (B) Signup and view all the answers

What is the primary difference between isosters and isolectronic species?

Molecular structure (D) Signup and view all the answers

What determines the chemical properties of an element?

Number of electrons (D) Signup and view all the answers

What is the significance of the magnetic quantum number (m) in an atom?

It represents the number of permitted orientation of subshells (C) Signup and view all the answers

What is the relationship between the value of 'm' and the orbital angular momentum quantum number 'l'?

m varies from -l to +l (B) Signup and view all the answers

What is the total value of 'm' for a given value of 'n'?

n^2 (D) Signup and view all the answers

What determines the maximum spin of an atom?

Number of unpaired electrons (D) Signup and view all the answers

What is the significance of the spin of an electron?

It can be clockwise or anticlockwise (B) Signup and view all the answers

What is the purpose of the Schrödinger wave equation in atomic physics?

To calculate the probability of finding an electron at a given point (D) Signup and view all the answers

What is the relationship between the principal quantum number (n) and the energy of an electron in an orbit?

The energy of an electron is directly proportional to the principal quantum number (A) Signup and view all the answers

What is the significance of the azimuthal quantum number (l) in atomic physics?

It is related to the angular momentum of an electron (D) Signup and view all the answers

What is the maximum number of electrons that can occupy an orbit represented by the principal quantum number (n)?

2n^2 (D) Signup and view all the answers

What is the purpose of the set of four quantum numbers (n, l, m, and s) in describing an electron?

To describe the electron as a three-dimensional wave (B) Signup and view all the answers

What does the Laplacian operator () represent in quantum mechanics?

A mathematical operator used to determine the number of subshells (D) Signup and view all the answers

What is the significance of the wave function () in quantum mechanics?

It represents the amplitude of the electron wave (D) Signup and view all the answers