Question

    

    

Construct the orbital diagram for Ni.

Answer 1

Concepts and reason

The concept used to solve this problem is based on orbital diagrams.

Orbital diagrams are pictorial representation of total number of electrons in an atom.

Fundamentals

There are three rules which are useful in forming the orbital diagram, these are as follows:

According to Pauli explosion principle only two electrons can fit into a single orbital.

According to Aufbau principle each electron first occupies the lowest energy orbital.

According to Hund’s rule each orbital is singly occupied with one electron before any orbital is doubly occupied and spin of all electrons in singly occupied orbital are same.

The atomic number of nickel is 28. So, there are 28 electrons in nickel atom.

First start filling the electrons with lowest energy orbital and each orbital is singly occupied with one electron. And only two electrons with opposite spin can fit into an orbital. Thus, orbital diagram of nickel is as follow.

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