(p 3. Electron shells: How many electrons go in the first shell? How many electr
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(p 3. Electron shells: How many electrons go in the first shell? How many electrons go in the second shell? 2 How many electrons can go in the third shell? 4. How many electrons does each element require in its valence shell to become stable? Okay, now let's apply all of this to an example. Example 1 Sodium and Chlorine Let's take a look at sodium (Na) and chlorine (Cl) atoms. Draw what I am describing and you will see it better. A sodium atom has how many protons? A sodium atom has how many electrons? How many electrons will go in the first shell? How many in the second shell? How many in the third? Now draw this out on the diagram in Figure 2.1, and take a look at it, in particular the third (valence) shell.Explanation / Answer
3.
The number of electrons go in the first shell is 2. Because of S orbital, becuase it accomidates only two electrons.
The number of electrons go in the second shell is 8. Because of S and P orbitals.becuase S accomidates only two electrons and P orbital accomidates 6 electrons.
The number of electrons go in the third shell is 18. Because of S, P and D orbitals.becuase S accomidates only two electrons, P orbital accomidates 6 electrons and D orbital accomidates 10 electrons.
4. The answer is 8 electrons. because as the valancy orbitals saturated with 8 electrons, it acts like an o group or inert elements.
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