Question

What is uranium’s electronic configuration?

Answer 1

Hint: The electronic configuration basically shows the number and arrangement of electrons in a specific atom. It depends upon the period the element is and s, p, d, f orbitals of the atom.

Complete step by step answer:
Electronic configuration can be of two types namely abbreviated and unabbreviated.
Abbreviated means short and abbreviated form means short form. Abbreviated electron configuration means the configuration of electrons in short form. In abbreviated electron configuration noble gas configurations are used. Noble gases have full octet or full outer shells which makes it easy to write electronic configuration.
For example, Sodium's atomic number is $11$ and so it’s abbreviated electron configuration is $$[Ne]3s^1$$ . But at the same time it becomes difficult if someone doesn’t remember the electronic configuration or atomic number of the noble gas. Not only can’t they identify the element they won’t even be able to use it.
Unabbreviated electron configuration means the electronic configuration without the use of noble gases configuration or also can be said as expanding the noble gases’s electron configuration for ease. For example the upper element sodium can be written as $1s^{2}2s^{2}2p^{6}3s^1$ . Here, we expanded the electronic configuration of Neon(Ne).
The electronic configuration of uranium is $[Rn]5f^{3}6d^{1}7s^2$.

Note: This form of electronic configuration is the unabbreviated one and it is very difficult and long time consuming and un required here so we can skip it here. But we can anytime write the unabbreviated configuration starting from $1s^2$.