The electronic configuration of chromium ($Cr$,$Z=24$) is:

What is the electronic configuration of an atom? Explain its method with examples.

Which of the following is not a permissible arrangement of electrons in an atom?

The number of radial node/s for $3p$ orbital is:

The principal quantum number $(n)$ represents:

In a multi-electron atom,which of the following orbitals have the same energy in the absence of magnetic and electric fields? $(a) n = 1, l = 0, m = 0, (b) n = 3, l = 0, m = 0, (c) n = 2, l = 1, m = 1, (d) n = 3, l = 2, m = 1, (e) n = 3, l = 2, m = 0$