" A "4f" orbital has? "

Statement 1. 4s orbital has lower energy than 3d orbital. Statement 2. s-orbital is spherically symmetrical and remains closer to the nucleus and has lower energy than d-orbital.

The elements in which electrons are progressively filled in 4f orbital are called

The elements in which electrons are progressively filled in 4f - orbital are called_________.

The principal and azimuthal quantum number of electrons in 4f orbitals are

The principal and azimuthal quantum number of electrons in 4f orbitals are