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.
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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