Read More
Date: 4-12-2018
940
Date: 28-1-2019
908
Date: 9-10-2018
826
|
White phosphorus (P4) has a tetrahedral structure. It is soft and waxy, but insoluble in water. Its glow occurs as a result of its vapors slowly being oxidized by the air. It is so thermodynamically unstable that it combusts in air. It was once used in fireworks and the U.S. military still uses it in incendiary bombs.
Figure 1: Structure of white phosphorus.
|
|
علامات بسيطة في جسدك قد تنذر بمرض "قاتل"
|
|
|
|
|
أول صور ثلاثية الأبعاد للغدة الزعترية البشرية
|
|
|
|
|
بمشاركة 800 طالبة.. معهد القرآن الكريم النسوي يختتم برامجه للمتخرجات في الدورات القرآنية الصيفية
|
|
|