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Date: 28-12-2018
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Date: 1-2-2018
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Date: 8-3-2017
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A neon compound is still yet to be theoretically identified although the gas phase ions like NeAr+, NeH+, HeNe+have been resolved from mass spectrometry studies.
The average atomic mass of neon is 20.1797 u. Neon is known to have over nineteen different isotopes ranging from 16-34 in isotopic mass. However, neon only has three stable isotopes: 20Ne, 21Ne, and 22Ne. The most abundant of those stable isotopes (no t1/2 or decay) is 20Ne at about 90% via alpha decay of Mg-25 to form Ne-21.
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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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مكتبة أمّ البنين النسويّة تصدر العدد 212 من مجلّة رياض الزهراء (عليها السلام)
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