Quantum Mechanical Model of the Atom

Draw the diagram of different $\mathrm{d}$-orbitals. 

Describe the shape of different $\mathrm{p}$-orbitals. 

How many nodes are present in $3\mathrm{s},3\mathrm{p}$ and $3\mathrm{d}$ orbitals? 

What is azimuthal quantum number? 

"The larger the value of '$\mathrm{l}$' belonging to the same main energy, higher is the energy associated with it." Comment on this statement.

Are the magnetic quantum number and angular momentum of an electron related to each other? Explain.

The principal and azimuthal quantum numbers associated with a subshell are a and $\mathrm{a}-4$, respectively. Predict the shape of that subshell if the shape of another subshell having azimuthal quantum number $\mathrm{a}-5$ is spherical. If that subshell is half-filled, predict the atomic number of the element.

In how many $\mathrm{d}$-orbitals do the lobes lie in between coordinate axes? What are those? 

In the pictorial representation of an orbital, what is the role of different intensity of shading? 

How many nodal surface(s) can $5\mathrm{s}$ orbital have? 

Why does $\mathrm{L}$ shell does not have $\mathrm{d}$-orbitals? 

Azimuthal quantum number indicates the angular momentum of an electron.

What is the shape of a '$\mathrm{s}$' orbital? Draw the diagram. 

What was the requirement for introducing the atomic orbital concept? 

Define an atomic orbital. 

Why did the spin quantum number come into existence? 

What is the principal quantum number? 

What was the requirement for introducing the magnetic quantum number? 

Which of the following statement is correct?

In $\mathrm{p}$ orbitals how electron revolve around the nucleus since it have node passing through nucleus.
And also in $\mathrm{d}$ orbitals?