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Argon has eight valence electrons. Its electron configuration is 1s2 2s2p6 3s2p6, so it has three filled electron shells of 2, 8 and 8. The atomic number of argon is 18. Argon was discovered by Sir William Ramsay in 1894. To find the number of protons in argon argon, first locate the element on the periodic table. Next, find the atomic number which is located above the element 's symbol. Since argon argon 's atomic number is 18 18, Ar Ar has 18 18 protons. Fill in the known values where N N represents the number of neutrons.
The noble gases are the chemical elements in group 18 of the periodic table.
An atomic number = 18. Electronic configuration. So,for m =0 number of electrons = 2+2+2+2+2 =10. B is the correct answer. Answer verified by Toppr.
They are the most stable due to having the maximum number of valence electrons their outer shell can hold.
Therefore, they rarely react with other elements since they are already stable.
Other characteristics of the noble gases are that they all conduct electricity, fluoresce, are odorless and colorless, and are used in many conditions when a stable element is needed to maintain a safe and constant environment.
This chemical series contains helium, neon, argon, krypton, xenon, and radon.
The noble gases were previously referred to as inert gases, but this term is not strictly accurate because several of them do take part in chemical reactions.
Note: The above text is excerpted from the Wikipedia article 'Noble gas', which has been released under the GNU Free Documentation License.
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Number Of Electrons In Argon
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What is the electron configuration of argon?
1 Answer
The electronic configuration of Argon (atomic number is 18) is-
#1s^2 2s^2 2p^6 3s^2 3p^6#
Note:-
For writing the electronic configuration of elements, the Aufbau Principle is used. In Aufbau Principle, the electrons are filled according to the increasing energy level of orbitals.
Number Of Unpaired Electrons In Argon
According to the Aufbau Principle, first the atomic number of element is determined (like here oxygen has atomic number 8) and then the electrons are filled in this order-
1s 2s 2p 3s 3p 4s 3d and so on..
.
In 's' orbital, maximum number of filling the electrons is 2.
In 'p' orbital, maximum number of filling the electrons is 6.
In 'd' orbital, maximum number of filling the electrons is 10.
In 'f' orbital, maximum number of filling the electrons is 14.
For example-
i) The electronic configuration of Chlorine (atomic number is 17) is-
#1s^2 2s^2 2p^6 3s^2 3p^5#
ii) The electronic configuration of Titanium (atomic number is 22) is-
Total Number Of Electrons In Argon
#1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^2#
Argon Electron Configuration
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