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The atomic number of calcium is 20 but its electronic configuration is 2,8,8,2 but according to bhors theory in k sell maximum number of electron held is 18 then why the electronic configuration of calcium is not 2.8.10????
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The atomic number of calcium is 20 but its electronic configuration is...
Ca has electronic configuration→1s² 2s² 2p6 3s² 3p6 4s². Now, since 4s orbital has lower energy than 3d orbital so electron first goes in the fourth shell rather than going into the third shell. Thus, the electronic configuration of calcium is written as 2,8,8,2. But Bohr's model is also correct because third shell can accommodate a total of 18 electrons.
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The atomic number of calcium is 20 but its electronic configuration is...
Understanding Atomic Number and Electronic Configuration
The atomic number of calcium (Ca) is 20, meaning it has 20 protons and, in its neutral state, 20 electrons. Its electronic configuration is represented as 2, 8, 8, 2.
Why Not 2, 8, 10?
- Energy Levels and Subshells:
- Electrons occupy energy levels (shells) and subshells. The first shell (K shell) can hold a maximum of 2 electrons, the second (L shell) can hold 8, and the third (M shell) can hold 18 in total but fills according to subshell capacities.
- Filling Order:
- According to the Aufbau principle, electrons fill the lowest energy subshells first. For calcium, the filling order is 1s², 2s² 2p⁶, 3s² 3p⁶, and then 4s².
Subshell Capacity of the Third Shell
- Third Shell Configuration:
- The maximum capacity of the third shell is indeed 18. However, within this shell, the electrons fill the 3s and 3p subshells before moving to the 4s subshell. Therefore, after filling the 3s² and 3p⁶, the next two electrons go into the 4s subshell.
- Final Configuration:
- Thus, calcium's electronic configuration is 2 (K) - 8 (L) - 8 (M) - 2 (N), reflecting the stability and the order of filling subshells.
Conclusion
The electronic configuration of calcium (2, 8, 8, 2) accurately represents the distribution of its 20 electrons in accordance with quantum mechanics and the principles governing electron distribution in atoms.
The atomic number of calcium (Ca) is 20, meaning it has 20 protons and, in its neutral state, 20 electrons. Its electronic configuration is represented as 2, 8, 8, 2.
Why Not 2, 8, 10?
- Energy Levels and Subshells:
- Electrons occupy energy levels (shells) and subshells. The first shell (K shell) can hold a maximum of 2 electrons, the second (L shell) can hold 8, and the third (M shell) can hold 18 in total but fills according to subshell capacities.
- Filling Order:
- According to the Aufbau principle, electrons fill the lowest energy subshells first. For calcium, the filling order is 1s², 2s² 2p⁶, 3s² 3p⁶, and then 4s².
Subshell Capacity of the Third Shell
- Third Shell Configuration:
- The maximum capacity of the third shell is indeed 18. However, within this shell, the electrons fill the 3s and 3p subshells before moving to the 4s subshell. Therefore, after filling the 3s² and 3p⁶, the next two electrons go into the 4s subshell.
- Final Configuration:
- Thus, calcium's electronic configuration is 2 (K) - 8 (L) - 8 (M) - 2 (N), reflecting the stability and the order of filling subshells.
Conclusion
The electronic configuration of calcium (2, 8, 8, 2) accurately represents the distribution of its 20 electrons in accordance with quantum mechanics and the principles governing electron distribution in atoms.
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The atomic number of calcium is 20 but its electronic configuration is 2,8,8,2 but according to bhors theory in k sell maximum number of electron held is 18 then why the electronic configuration of calcium is not 2.8.10????
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The atomic number of calcium is 20 but its electronic configuration is 2,8,8,2 but according to bhors theory in k sell maximum number of electron held is 18 then why the electronic configuration of calcium is not 2.8.10???? for Class 10 2024 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about The atomic number of calcium is 20 but its electronic configuration is 2,8,8,2 but according to bhors theory in k sell maximum number of electron held is 18 then why the electronic configuration of calcium is not 2.8.10???? covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The atomic number of calcium is 20 but its electronic configuration is 2,8,8,2 but according to bhors theory in k sell maximum number of electron held is 18 then why the electronic configuration of calcium is not 2.8.10????.
The atomic number of calcium is 20 but its electronic configuration is 2,8,8,2 but according to bhors theory in k sell maximum number of electron held is 18 then why the electronic configuration of calcium is not 2.8.10???? for Class 10 2024 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about The atomic number of calcium is 20 but its electronic configuration is 2,8,8,2 but according to bhors theory in k sell maximum number of electron held is 18 then why the electronic configuration of calcium is not 2.8.10???? covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The atomic number of calcium is 20 but its electronic configuration is 2,8,8,2 but according to bhors theory in k sell maximum number of electron held is 18 then why the electronic configuration of calcium is not 2.8.10????.
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