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Date: 17-2-2016
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Date: 13-4-2019
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Date: 13-4-2019
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Electron configurations
Energy level diagrams are useful when you need to figure out chemical reactions and bonding, but they’re very bulky to work with. Wouldn’t it be nice if there were another representation that gives just about the same information but in a much more concise form? Well, there is. It’s called the electron configuration.
The electron configuration for oxygen is 1s22s22p4. Compare that notation with the energy level diagram for oxygen in Figure 1.. Doesn’t the electron configuration take up a lot less space? You can derive the electron configuration from the energy level diagram. The first two electrons in oxygen fill the 1s orbital, so you show it as 1s2 in the electron configuration.
The 1 is the energy level, the s represents the type of orbital, and the superscript 2 represents the number of electrons in that orbital. The next two electrons are in the 2s orbital, so you write 2s2. And finally, you show the four electrons in the 2p orbital as 2p4. Put it all together, and you get 1s22s22p4. The sum of the superscript numbers equals the atomic number, or the number of electrons in the atom.
Here are a couple of electron configurations you can use to check your conversions from energy level diagrams:
Chlorine (Cl): 1s22s22p63s23p5
Iron (Fe): 1s22s22p63s23p64s23d6
Figure 1: Energy level diagram for oxygen.
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إجراء أول اختبار لدواء "ثوري" يتصدى لعدة أنواع من السرطان
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دراسة تكشف "سببا غريبا" يعيق نمو الطيور
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اللجنة التحضيرية للمؤتمر الحسيني الثاني عشر في جامعة بغداد تعلن مجموعة من التوصيات
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السيد الصافي يزور قسم التربية والتعليم ويؤكد على دعم العملية التربوية للارتقاء بها
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لمنتسبي العتبة العباسية قسم التطوير ينظم ورشة عن مهارات الاتصال والتواصل الفعال
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في جامعة بغداد.. المؤتمر الحسيني الثاني عشر يشهد جلسات بحثية وحوارية
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