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Date: 30-3-2019
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Date: 30-10-2018
897
Date: 1-2-2018
1197
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Hydrogen's low ionization energy makes it act like an alkali metal:
However, it half-filled valence shell (with a 1s1 configuration) with one e− also causes hydrogen to act like a halogen non-metal to gain noble gas configuration by adding an additional electron
Hydrogen accepts e- from an active metal to form ionic hydrides like LiH. By forming an ion with -1 charge, the hydrogen behaves like a halogen.
with M representing Group 1 Alkali metals
Examples:
2K(s)+H2(g)→2KH(s)
2K(s)+Cl2(g)→2KCl(s)
with M representing Group 2 Alkaline Earth metals
Example:
Ca(s)+H2(g)→CaH2(s)
Ca(s)+Cl2(g)→CaCl2(s)
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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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وفد كلية الزراعة في جامعة كربلاء يشيد بمشروع الحزام الأخضر
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