Atomic Structure

Given the ratio of kinetic energy of electron in two orbitals is $16: 9$. Calculate the ratio of wavelength of electron waves?

Find the correct set with isoelectronic species?

The correct order of decreasing energy for the electrons whose quantum numbers $n$ and $l$ are given below, is
A. $n=5$ and $l=2$
B. $n=5$ and $l=0$
C. $n=4$ and $l=3$
D. $n=4$ and $l=1$

In the two elements, ${ }_{Z_1} A^{M_1}$ and ${ }_{Z_2} B^{M_2}$, the following relations are true. $M_1 \neq M_2$ and $Z_1 \neq Z_2$ but $M_1-Z_1=M_2-Z_2$. These elements are ( $M$ is atomic weight, $Z$ is atomic number)

The uncertainty in position and velocity of a particle in motion are $1 \times 10^{-8} \mathrm{~m}$ and $6.627 \times 10^{-20} \mathrm{~m} / \mathrm{s}$, respectively. The mass of the particle is ( $h=6.627 \times 10^{-34} \mathrm{Js}$ )

The maximum number of possible electrons in a subshell with $n=3$ and $l=2$ is

The degeneracy of the level of hydrogen atoms that contain the energy of $\left(\frac{-R_{\mathrm{H}}}{16}\right)$ is

Wavelength of $\mathrm{H}^{+}$ion with kinetic energy 1.65 eV is (mass of proton $=1.6726 \times 10^{-27} \mathrm{~kg}$ )

Which of the following statements is not true about Thomson's model of atom?

Which of the following statements is not the result of cathode ray discharge tube experiment with perforated anode?