Structure of At...

Energy of photon of visible light is

As per de-Broglie's formula a macroscopic particle of mass 100 g and moving a velocity of 100 cm s^-1 will have a wavelength of

Uncertainty in the position of an electron (mass = 9.1 × 10^-31 kg) moving with a velocity 300 ms^-1 accurate upon 0.001 % will be (h = 6.63 × 10^-34 Js)

In an atom, the total number of electrons having quantum numbers n = 4, |m_l| = 1 and m_s = - 1/ 2 is

The correct set of four quantum number for the valence electrons of rubidium atom (Z = 37) is

Which of the following sets of quantum numbers could represent the last electron added to complete the electron configuration for a ground state atom of Br (Z = 35) according to the Aufbau principle n : l ; m_l ; m_s

The energy absorbed by each molecule (A₂) of a substance is 4.4 × 10^–19 J and bond energy per molecule is 4.0 × 10^–19 J. The kinetic energy of the molecule per atom will be:

If the energy of a photon is given as 3.03 × 10^–19 J then, the wavelength (λ) of the photon is :

The magnetic quantum number for d-orbital is given by

The maximum number of electrons that can have principal quantum number, n = 3 and spin quantum number, m_s = - (1/2), is