Orbital is the region is space where there is a high probability of finding an electron in an atom.
The orbitals farthest from the nucleus in the under listed atoms are the valence orbitals.
Ca - s orbital
Tc - s orbital
Br - p orbital
Cf - s orbital
V - s orbital
Fr - s orbital
Np - s orbital
Rn - p orbital
It must be noted that when the d orbitals are filled, they become lower in energy than the 4s orbitals. the empty 3d orbitals are higher in energy than 4s but the filled 3d level is lower in energy than the 4s level.
Learn more: https://brainly.com/question/14283892
