The question is incomplete; the complete question is:
Write electron configurations for each of the following elements. Use the symbol of the previous noble gas in brackets to represent the core electrons. Express your answer in condensed form in order of increasing orbital energy as a string without blank space between orbitals. For example, (He)2s^22p^2. For: Te, Br, I, Cs
Answer:
Te- [Kr]4d^10 5s^2 5p^4
Br- [Ar] 3d^10 4s^2 4p^5
I - [Kr] 4d^10 5s^2 5p^5
Cs - [Xe]6s^1
Explanation:
We could write a short hand electron configuration for any element. All we need to do is to study the long hand electron configuration of the element and decode its noble gas core. Every element is composed of an inert gas core configuration showing the inner electrons followed by the outermost shell electrons.
The inert gas core could be shown by writing the symbol of the particular noble gas involved within square brackets followed by the element's outer electron configuration as shown in the answer above.
