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Interpretation: The electron configurations for two principal ions in body fluids need to be determined.
Concept introduction: The electron configuration explains the electron distribution in atomic orbitals. There is a standard notation to write an electron configuration. The atomic shell is written in a sequence with the number of electrons in superscript.
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Answer to Problem 18LC
Explanation of Solution
The extracellular fluid is composed of different cations and anions. The two principal ions are sodium and chloride ions. Here, sodium is a metallic element. It belongs to group 1 thus; it has 1 valence electron. Sodium can lose this electron to complete its octet. The ion so formed will have a positive charge and represented as
Now, the electronic configuration of sodium ion can be represented as follows:
Similarly, chlorine is a non-metal. It belongs to group 17 with 7 valence electrons. It can gain 1 electron to attain noble gas electronic configuration. The ion so formed is
Now, the electronic configuration of chlorine ion can be represented as follows:
Thus, the electron configurations for two principal ions in body fluids are as follows:
Chapter 7 Solutions
Chemistry 2012 Student Edition (hard Cover) Grade 11
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