How do you find the electron configuration of an element?

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There are times when you need to know where the electrons are likely to be in the atom. The configuration of the electrons helps to figure it out.  You need to divide the periodic table into sections for the representation of atomic orbitals to calculate the electron configuration. You can say that the electron configuration is a numeric representation of its electron orbitals. They are differently shaped regions around the nucleus of an atom where the electrons are likely to be located mathematically. Usually, it takes almost eight steps to figure out the electron configuration. So, to avoid the long procedure of calculation you can use an online electron configuration calculator to find the electron configuration of any element.

What is the Electron Configuration?

The configuration of electrons displays the distribution of the electron of an atom or molecule. A specific notation is used to show where the electrons are likely to be located. So, understanding of that notation is an essential part of the configuration. By understanding the notation helps to let you know which element you are referring to & how many electrons an element has. The periodic table structure is based on the configuration of the electrons and the notation of phosphorus is 1s22s22p63s23p3. This might be very confusing for you, so you can try an online electro calculator that displays the electron configuration and abbreviated electron configuration.

How to Find the Electron Configuration:

To write the electron configuration there are three rules: Aufbau principle, Pauli’s exclusion principle, and hund’s rule. However, you can write the configuration of elements by understanding the “Aufbau principle”.  It states that the electrons occupy the atomic orbitals in an order of increasing energies that is given by the n +1 rule. Now increase the value of n + 1 for the orbital. If the orbitals have the same value of n + 1, then the orbital with low value of n will have low energy and so the electrons will occupy that first.

So, the order for the filling of electrons will be in this way:

1s, 2s, 2p, 2s, 3p, 4s, 3d, 4p, 5s, 4d, 5p, 4f……..

Each atomic orbital can accommodate only two electrons that spin in the opposite direction. In this way, the first shell can have two electrons in 1s, 2nd shell has 8 electrons, 2 in the 2s, and 6 in the 2p. The 3rd subshell has 18 electrons. This procedure for the electron configuration is very time-consuming and critical when it comes to manual calculation. So, make use of an online electron orbital calculator that displays the abbreviated configuration & an atomic number of an element within a couple of seconds.

You can also write the electron configuration by following the below steps:

  • Find the required element from the periodic table such as sodium, calcium, etc.
  • Find the atomic number of the first noble gas.
  • Write the noble gas in the parenthesis to start the electronic configuration. Now, put the atomic number of the gas under the symbol to figure out the number of electrons.
  • Then, write the electron configuration of the element until you reach the correct number.

If you don’t want to perform the calculation for the electron configuration, then you can do it by using the orbital notation calculator that allows you to determine the electron configuration of any element.

Atomic Mass of an element:

The atomic mass is known as a weighted average of all the isotopes of that element. Usually, the atomic mass is referred to as the atomic weight, but the term mass is more precise. For any isotope, the sum of all protons and neutrons in the nucleus is said to be the mass number. To calculate the atomic mass of an atom, you need to add the number of protons and neutrons and then multiply them by 1 amu. Instead of doing the manual calculation for the mass, you can consider the atomic mass calculator that calculates electron configuration, number of elements, atomic mass, and standard state.

What are electron energy levels?

The energy levels are said to be the fixed distances where the electrons are rotating around the nucleus with the definite energy. The energy is associated with a certain level of energy that increases with the increase of distance from the nucleus. You can calculate the electron configuration by simply dividing the periodic table into sections, but this procedure is time-consuming. So, instead of calculating the electron configuration by yourself, you can use Electron Configuration Calculator that tells atomic number, atomic mass, standard state, and electron configuration & abbreviated configuration.

Why are electronic configurations important?

The electron configuration provides insight into the chemical behavior of the elements by figuring out the valence of electrons of an atom. It also assists in classifying the elements into various blocks such as s-block elements, p-block elements, etc. it making it easy to collectively study the properties of an element. If your calculation is not so good as to write the electron configuration, then you can use the electron configuration calculator that lets you know the electron configuration of any element.


The electron configuration is a way that describes how the elements are distributed in its atomic orbitals. The configurations of the electron follow the standard notation in which all the electrons contained in atomic subshells are placed in a sequence. However, the procedure to write the configuration is time-consuming so, you can consider the electron configuration calculator for the display of atomic numbers of each element.