Which of the orbitals 4s, 4p, 4d and 4f has the lowest energy? By: Sunday|Published on: Aug 20|Categories: Chemistry WAEC| 0 comments A. 4f B. 4p C. 4d D. 4s Correct Answer: Option D – 4s Users Also Read These:How many orbitals are in the d-sub shell?Which of the electrons in the following orbitals…The process of transforming the chemical energy of…In an ecosystem the organism which changes light…How many orbitals are associated with the p-sub…SEE ALSO An isotope has an atomic number of 15 and a mass number of 31. The number of proton it contains is?