Which one is a wrong statement?

• Total orbital angular momentum of electron in 's' orbital is equal to zero

• An orbital is designated by three quantum numbers while an electron in an atom is designated by four quantum numbers

• The value of m for d_z2 is zero

• The electronic configuration of N atom is

What are α-particles?

What are the fundamental particles present in a neutral atom having atomic number greater than 1?

Do protons and neutrons have identical mass?

When α-particles are sent through a thin metal foil, most of them go straight through the foil. What inference do you draw from it?

What did Rutherford's experiment on scattering of particles show for the first time?

What is Plum-Pudding model of the atom?

Are neutrons present in all atoms?

Why are electrons called planetary electrons?