Towards Quantum Mechanical Model of the Atom

According to de Broglie, what is the relation between the wavelength of the wave associated with the moving electron and the momentum of the electron? 

What do you mean by the dual nature of an electron? 

Calculate the total number of angular nodes and radical nodes present in $3\mathrm{d}$ and $4\mathrm{f}$ orbital?

Did bohr's model account for the splitting of line spectra of a hydrogen atom into finer lines..?

How many angular nodes are present in ${\mathrm{d}}_{\mathrm{xy}}$ orbital ?

Why electrons can't live in the nucleus?

de-Broglie's wavelength of an electron having kinetic energy $2.7\times {10}^{-23} \mathrm{J}$ is $\mathrm{A}\times {10}^{-8} \mathrm{m}$. Then, what is the value of $\mathrm{A}$?

The de-Broglie wavelength of an electron travelling at $\mathrm{x}$percent of the speed of light was found to be $2.42 \stackrel{\mathrm{o}}{\mathrm{A}}$. Then, what is the value of '$\mathrm{x}$'?

The ratio of the velocity of ${\mathrm{SO}}_2$ molecules to the velocity of ${\mathrm{O}}_2$ molecules such that they are associated with de Broglie waves of the same wavelength is

Let the mass of a particle be $1 \mathrm{g}$ and its de-Broglie wavelength $6.63\times {10}^{-33} \mathrm{m}$. Then, what will be its velocity?

If the electron is accelerated by a potential difference of $300 \mathrm{V}$, then what will be wavelength associated with the moving electron?

Suppose the kinetic energy of a particle is doubled, de-Broglie's wavelength becomes

Is the Bohr's model consistent with the Heisenberg's uncertainty principle?

Bohr's model of an atom is contradicted by

What is the difference between radial node and angular node?

What is an angular node and find the number of angular nodes for $5\mathrm{d}$-orbital?

What is a radial node?

What are the two types of nodes in orbitals?

Plot of radial wave function $\mathrm{\Psi }\left(\mathrm{r}\right)$ as a function of distance $\mathrm{r}$ of the electron from the nucleus for $1\mathrm{s}$ orbital.

The number of radial nodes in $1\mathrm{s}$ and $2\mathrm{s}$ orbitals are respectively: