Single Answer MCQ
Q-00001517
Describe the electronic configuration of a sodium atom and a chlorine atom.
1
Na - 2,8,1; Cl - 2,8,7
2
Na - 2,8,7; Cl - 2,8,1
3
Na - 2,1,8; Cl - 2,8,7
4
Na - 2,7,8; Cl - 2,1,8
Answer and Solution
Answer
A. Na - 2,8,1; Cl - 2,8,7
Solution:
The electronic configuration of a sodium atom is 2,8,1 (2 electrons in the first shell, 8 in the second, and 1 in the third), while that of a chlorine atom is 2,8,7 (2 electrons in the first shell, 8 in the second, and 7 in the third).
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