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د.محمود الشواربي
الذرة في خدمة الزراعة [EPUB ebook]

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Örtmek د.محمود الشواربي: الذرة في خدمة الزراعة (ePUB)

تتكون المواد من جزيئات، وتتكون الجزيئات من عناصر، والعناصر من ذرات، وعلى هذا يمكن القول بأن الذرة هي وحدة العنصر ، وتتكون الذرة من نواة ( ( Nucleusيتركز فيها وزن الذرة، ويدور حول هذه النواة في محيطات خارجية عدد من الإلكترونات، التي يعتبر وزنها ضئيلا جدا بالنسبة إلى وزن نواة الذرة، وهذه الإلكترونات جميعا محملة بشحنة سالبة.
وتتكون نواة الذرة من عدد من البروتونات ( (Protons) وعدد من النيوترونات (Neutrons ) والبروتون هو جسيم صغير ثقيل نسبيا، محمَل بشحنة كهربائية موجبة، وأما النيوترون فيبلغ وزنه تقريبا وزن البروتون وهو متعادل كهربائياً، وذرة الأيدروجين تعتبر أبسط الذرات، وتتكون من بروتون واحد، وفي محيطها الخارجي إلكترون واحد.

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Dil Arapça ● Biçim EPUB ● Sayfalar 91 ● ISBN 9785269618487 ● Dosya boyutu 0.8 MB ● Yaş 99-17 yıl ● Yayımcı وكالة الصحافة العربية ● Kent London ● Ülke GB ● Yayınlanan 2024 ● İndirilebilir 24 aylar ● Döviz EUR ● Kimlik 10089033 ● Kopya koruma Sosyal DRM

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Arabookverse د. محمود الشواربي

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