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Date: 5-1-2018
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Date: 23-2-2019
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Date: 29-11-2018
1021
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Silicon, the second most abundant element on earth, is an essential part of the mineral world. It's stable tetrahedral configuration makes it incredibly versatile and is used in various way in our every day lives. Found in everything from spaceships to synthetic body parts, silicon can be found all around us, and sometimes even in us.
The name for silicon is taken from the Latin silex which means "flint". The element is second only to oxygen in abundance in the earth's crust and was discovered by Berzelius in 1824. The most common compound of silicon, SiO2 , is the most abundant chemical compound in the earth's crust, which we know it better as common beach sand.
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علامات بسيطة في جسدك قد تنذر بمرض "قاتل"
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أول صور ثلاثية الأبعاد للغدة الزعترية البشرية
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في مستشفى الكفيل.. نجاح عملية رفع الانزلاقات الغضروفية لمريض أربعيني
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