A particular station of All India Radio, New Delhi, broadcasts on a frequency of 1,368 KHz (kilohertz). The wavelength of the electromagnetic radiation emitted by the transmitter is:
[Speed of light, c = 3 × 10^⁸ ms^⁻¹]

Which of the following molecules has/have a cage-like structure?
I. Diamond
II. Graphite
III. Fullerene

What is the order of K,L and M shells in terms of the total number of electrons?

The energy of an electron in the ground state then that for an electron in in J is :

Match List I with List II.

A particular station of All India Radio, New Delhi, broadcasts on a frequency of 1,368 KHz (kilohertz). The wavelength of the electromagnetic radiation emitted by the transmitter is:
[Speed of light, c = 3 × 10^⁸ ms^⁻¹]

What is the maximum number of orbitals that can be identified with the following quantum numbers?

Calculate the energy in joule corresponding to light of wavelength 45 nm :

Select the correct statements from the following:
A. Atoms of all elements are composed of two fundamental particles.
B. The mass of the electron is kg.
C. All the isotopes of a given element show same chemical properties.
D. Protons and electrons are collectively known as nucleons.
E. Dalton’s atomic theory, regarded the atom as an ultimate particle of matter.
Choose the correct answer from the options given below:

Two electrons occupying the same orbital are distinguished by:

The relation between , ( = the number of permissible values of magnetic quantum number (m)) for a given value of azimuthal quantum number (l), is