Structure of Atom Quiz-8

What is the lowest energy of the spectral line emitted by the hydrogen atom in the Lyman series? (h = Planck’s constant, c = velocity of light, R = Rydberg’s constant)

Calculate the wavelength (in nanometer) associated with a proton moving at $1.0 \times 10^3ms^{-1}$.(mass of proton $= 1.67 \times 10^{-27}kg$ and $h = 6.63 \times 10^{-34} Js)$

The energy required to break one mole of Cl-Cl bonds in $Cl_2$ is 242 kJ $\text{mol}^{-1}$. The longest 2 wavelength of light capable of breaking a single Cl-Cl bond is

The frequency of light emitted for the transition n = 4 to n = 2 of $He^+$ is equal to the transition in H atom corresponding to which of the following?

Which of the following statements is correct for an electron that has the quantum numbers n = 4 and m = -2?

What is the ratio of energies of an electron is 1st orbit of $He^+$and H?

Radius of which orbit of $He^+$ is one half as that of 4th orbit of $Be^{3+}$?

In an atom, an electron is moving with a speed of 600 m/s with an accuracy of 0.005%. Certainty with which the position of an electron can be located is ($h = 6.6\times 10^{-34}\,kg\,m^2s^{-1}$ ; mass of electron $e_m= 9.1 \times 10^{-31} kg$)

Ionisation energy of $He^+$is $19.6 \times 10^{-18}J$ atom$^{-1}$. The energy of the stationary state (n = 1) of $Li^{2+}$is

 A gas absorbs a photon of 355 nm and emits at two wavelengths. If one of the emission is at 680 nm, the other is at