In the round two, we’ve started a new lesson from periodic table to chemical bonding. There are three types of bond which are ionic bonds, covalent bonds, metallic bonds. I will explain you to all of these concepts.
Chemical bonding
Chemical bonding is the attraction of elements combine together to from another chemical compound, which occurs when atoms share or transfer violent electrons. Violent electrons are the electron that locate in the outer energy level of an atom. For example: water is a chemical compound (H20). Water molecules always make up of two atoms of hydrogen and one atoms of oxygen.
Ionic bonds
Ionic bonds form when atoms of a metallic element give up electrons to atoms of a nonmetallic element. It is the force of attraction that holds positive and negative ions together. For example:Between sodium and chlorine. Sodium has 11 valence electrons and chlorine has 17 valence electrons. Sodium has 1 valence electron left so it gives to chlorine, the one who need 1 more valence electron to be stable.
Covalent bonds
A covalent bond is the force that holds two atoms together that they share each electrons. They form only between atoms of nonmetals which may be the same of different elements.
Metallic bonds
A metallic bond is the force between positive metal and the valence electrons that shares with other ions of the metal.