How to Find the Valence Electrons for Krypton (Kr)?
The atomic number of krypton is 36. Krypton is an inert element and its symbol is ‘Kr’. Krypton atoms do not participate in the formation of any bonds.
This article discusses in detail how to easily calculate the number of valence electrons in krypton. Hopefully, after reading this article you will know in detail about this.
What are the valence electrons of krypton?
Krypton is an element of group-18. The valence electrons are the total number of electrons in the last orbit(shell).
The total number of electrons in the last shell after the electron configuration of krypton is called the valence electrons of krypton.
The valence electrons determine the properties of the element and participate in the formation of bonds.
How do you calculate the number of valence electrons in a krypton atom?
The valence electrons have to be determined by following a few steps. The electron configuration is one of them.
It is not possible to determine the valence electron without electron configuration. Knowing the electron configuration in the right way, it is very easy to determine the valence electrons of all the elements.
However, valence electrons can be easily identified by arranging electrons according to the Bohr principle. Now we will learn how to determine the valence electron of krypton.
Step-1: Determining the total number of electrons in krypton
1st we need to know the total number of electrons in the krypton atom. To know the number of electrons, you need to know the number of protons in krypton.
And to know the number of protons, you need to know the atomic number of the krypton element. To know the atomic number we need to take the help of a periodic table.
It is necessary to know the atomic number of krypton elements from the periodic table. The atomic number is the number of protons. And electrons equal to protons are located outside the nucleus.
That is, we can finally say that there are electrons equal to the atomic number in the krypton(Kr) atom. From the periodic table, we see that the atomic number of krypton is 36. That is, the krypton atom has a total of thirty-six electrons.
Step-2: Need to do electron configuration of krypton
Step-2 is very important. In this step, the electrons of krypton have to be arranged. We know that krypton atoms have a total of thirty-six electrons.
The electron configuration of the krypton shows that there are two electrons in the K shell, eight in the L shell, eighteen in the M shell, and eight in the N shell.
That is, the first shell of krypton has two electrons, the second shell has eight electrons, the 3rd shell has eighteen electrons and the 4th shell has eight electrons. The number of electrons per shell of krypton is 2, 8, 18, 8.
Step-3: Determine the valence shell and calculate the total electrons
The third step is to diagnose the valence shell. The last shell after the electron configuration is called the valence shell. The total number of electrons in a valence shell is called valence electrons.
The electron configuration shows that the last shell of krypton has eight electrons. Therefore, the valence electrons of krypton are eight.
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What is the valency of krypton?
The ability of one atom of an element to join another atom during the formation of a molecule is called valency(valence). The number of unpaired electrons in the last orbit of an element is the valency of that element.
The electron configuration of krypton shows that a krypton atom has no unpaired electrons. Therefore, the valency of the krypton atom is 0.
Why is krypton an inert gas?
The elements in group-18 of the periodic table are inert gases. The inert gases of Group-18 are helium(He), neon(Ne), argon(Ar), krypton(Kr), xenon(Xe), and radon(Rn). We know that the element in group-18 is krypton.
The electron configuration of krypton(Kr) shows that the orbit at the end of Krypton is filled with electrons.
Krypton does not want to exchange or share any electrons because the last shell of krypton is full of electrons. And krypton does not form any compounds because it does not share any electrons.
They do not participate in chemical bonding and chemical reactions. For this, they are called inert elements.
The inert elements are in the form of gases at normal temperatures. For this inert elements are called inert gases. Again for this same reason, inert gas is called a noble gas.