What is the s,p,d,f configuration of Co?
Cobalt is an inner transition metal which means the electron configuration will end in a d block. Cobalt is in the 7th column of the d block and therefore has 7 d electrons
All electron levels must be filled above that point. So the entire configuration is as follows:
As another example, Argon is a noble gas and has each of the electron levels filled. Using Noble Gas Notation you can write the s,p,d,f configuration in an abbreviated form.
[Ar] can represent
Making the configuration:
Here is a You Tube video on determining electron configurations:
There are certain rules which govern electronic configuration. One of them is Aufbau Principle. According to this rule 'the electrons are first filled in that subshells which has less value of (n+l) and if two orbitals have same (n+l) value then lower 'n' value orbital will be filled up first.