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Atomic Structures

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36 Questions

What is the total number of orbitals in the 3d subshell?

5

What is the shape of the 'p' orbital?

Dumbbell

What is the value of 'l' for 's' orbitals?

0

What happens to the size and energy of 's' orbitals as 'n' increases?

Increases

How many 'p' orbitals are there in a subshell?

3

What is the number of nodal planes in a 'p' orbital?

1

What is the key point to remember about the singly occupied orbitals?

They should have electrons with parallel spins

What is the shape of the dz2 orbital?

It does not have four lobes

Why is the electronic configuration of copper (Cu) an exception?

Because it has a more stable configuration with 10 electrons in the 3d subshell

What is the formula for spin angular momentum?

s(s + 1) / 2

Which of the following elements does NOT have an exception in its electronic configuration?

Silver (Ag)

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

Magnetic factors and spin angular momentum

What is the atomic number of an atom equal to?

Number of protons in the nucleus

What is the correct expression for Moseley's law?

ν = a(Z - b)

What is the number of electrons in the isoelectronic species CO and CN-?

14

What is the number of electrons in the isoelectronic species P3-, S2-, Cl-, Ar, K+, and Ca2+?

18

What is the relation between the atomic number and the number of electrons in a neutral atom?

Atomic number is equal to the number of electrons in a neutral atom

What is the unit of frequency of a spectral line?

All of the above

What is the significance of the principal quantum number n in the Bohr quantization postulate?

It determines the orbital angular momentum of the electron

According to the Bohr model, what happens when an electron moves in a permitted discrete orbit?

It does not radiate or lose energy

What is the advantage of the Bohr model in explaining the spectra of species having one electron?

It satisfactorily explains the spectra of species having one electron

What is the significance of the energy level of the electron in the Bohr model?

It determines the orbital radius of the electron

What is the relationship between the energy of a photon and its frequency according to Planck's quantum theory?

E ∝ ν

What is the main postulate of Bohr's atomic model that distinguishes it from Rutherford's model?

Electrons revolve around the nucleus in stationary orbits

What is the ground state of an atom in the Bohr model?

The state of the atom when it is in its lowest energy level

What is the characteristic of the permitted orbits in Bohr's atomic model?

The angular momentum of an electron is an integral multiple of h/2π

What happens when an electron jumps from a higher to a lower energy level in the Bohr model?

Energy is radiated

What is the condition for the ejection of electrons from the surface of a metal in the photoelectric effect?

The frequency of the radiation is greater than the threshold frequency

What is the relationship between the energy of the radiation and the frequency of the radiation in the photoelectric effect?

E = hν

What is the significance of the Planck's constant (h) in the quantum theory of radiation?

It relates the energy of a photon to its frequency

What is the physical significance of the negative sign in the equation for energy associated with an electron in a Bohr orbit?

It indicates the electron is attracted towards the nucleus

What is the name of the constant used to calculate the radius of the nth orbit in Bohr's atomic model?

Rydberg constant

What is the term used to describe the energy state of an electron when it is in the n = 1 orbit?

Ground state

What is the name of the series of lines in the optical spectrum of hydrogen?

Lyman, Balmar, Paschen, Brackett, Pfund, and Humphrey

What is the significance of the value of n = ∞ in Bohr's atomic model?

It represents the ionized state energy

What is the physical significance of the energy difference between two energy levels in Bohr's atomic model?

It is the energy required to move an electron from one energy level to another

Test your understanding of electronic configuration principles and how to write configurations for various elements. Learn about the importance of parallel spins in singly occupied orbitals and more.

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