The atomic number of calcium is 20. Therefore, the Electronic configuration of calcium is (2,8,8,2).
Calcium:There are 108 elements in a periodic table.In which atomic number of calcium is 20.There are the four shells such as K, L,M and N.First shell can contains 2 electrons.Second shell contains 8 electrons.The maximum capacity of third shell is 18 electrons so only remaining 10 electrons will occupy on it.So, 8 electrons will remain in M shell. and 2 electrons lies in N shell.Therefore, the electronic configuration of calcium is (2,8,8,2).
Therefore, The atomic number of calcium is 20. Therefore, the Electronic configuration of calcium is (2,8,8,2).
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The electron configuration of calcium, which has 20 electrons, is [Ar]4s². This notation indicates that calcium has the same electron configuration as the noble gas argon (Ar) with an additional two electrons in the 4s orbital.
The electron configuration of an atom describes the distribution of its electrons among the orbitals. For calcium, which has 20 electrons, the electron configuration can be written using the Aufbau principle where electrons fill from lower to higher energy orbitals. Calcium (Ca) with an atomic number 20 has the following electron configuration:
[Ar]4s²
Here's how the configuration is built up step by step:
Fill the 1s orbital: 1s²Proceed to 2s and 2p orbitals: 2s²2p&sup6;Continue to 3s and 3p orbitals: 3s²3p&sup6;Lastly, add the electrons to the 4s orbital: 4s²The symbols [He], [Ar], etc., represent the noble gas core configurations, which summarize the configurations of the inner, filled shells. For calcium, [Ar] stands for the configuration of argon, signifying that Ca has the same inner shell configuration as Ar plus two additional electrons in the 4s orbital. This shorthand notation is used for convenience to avoid writing out the full electron configuration every time.
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