ساينس الصف الثاني الاعدادي – الفصل الدراسي الاول ساينس تانية اعدادي – ترم اول In This part we will study : 3. Metallic and non-metallic property Metals They are the elements, which have less than four electrons in their outermost energy levels. Positive ion It is an atom of a metallic element which lost one electron or more during the chemical reaction. Nonmetals They are the elements, which have more than four electrons in their outermost energy levels. Negative ion It is an atom of nonmetallic element which gained an electron or more during the chemical reaction. Metalloids They are the elements, which have the properties of both metals and nonmetals. لمتابعة مستر احمد الباشا وكل ما يخص الساينس : جروب الفيس بوك http://bit.ly/2Of1mcN صفحة الفيس بوك http://bit.ly/2Gq5xMo بالتوفيق مستر احمد الباشا