Ionic compounds are two or more ions held together by attraction. An example of an ionic compound is table salt. It consists of positive sodium ions and negative chloride ions. It is a crystal that can be seen with the naked eye. If it looks like it is a powder it is just because the crystals are too small to actually be seen. They have high melting and boiling points and are hard or brittle. They can also be dissolved in water.
The definition for a non ionic compound is simply means that the chemical bonds are non ionic. They cannot be dissolved in water. They usually have chemical bonds that share electron density.
Ionic compounds our molecules that contain charged ions with opposite charges. For example, table salts (NaCl) consists of positive sodium ions (Na+) and negative chloride ions (Cl-) , making it an ionic compound.
Non ionic compounds are basically covalent bonds. Covalent bonds are formed by sharing a pair of electrons between two atoms. For example, water (H20) is a covalent bond.
first of all we have two types of bonds : ionic bond and covalent bond ,,the ionic bond occures between two elements (a metal & a non metal)where the metallic element lose 1,2 or 3 elecrons giving them to the non-metalic element (example : sodium (Na)and it's atomic number is 11 can be combined during chemical reactions with a non-metal as chlorine (Cl) and it's atomic number is 17 ) ,,,Sodium loses an atom & chlorine takes it ,,,and the reason is simple ,,,that occures because each elemen wants to have only 8 elecrons in it's outermost enery level in order to be in a stabled state
Covalent bond : occures between two non-metals by sharing electrons (a chlorine atom shares another chlorine atom by 1 electron) why?? because chlorine has 7 electrons it it's outer energy level so it needs only another one to have 8 elecrons in the outer level ( it gains it by sharing of course)
now you want to know WHAT ABOUT NOBLE GASES ? : these elements don't make ionic or covalent bond because if you make electronic configration to anyone of them , you find that each one already has 8 electrons in the outer energy level thus sharing or losing electrons is meaningless for them (ex. neon (Ne) it's atomic no. is 10 the k level takes 2 electrons & the L level takes 8 electrons ) EXCEPT THE HELIUM whish is also a noble gas but has 2 electrons filling the level k copmletely thau it needs no more electrons
Non-ionic compounds cannot dissolve in water, while ionic compounds can.
Ionic compounds: Salt
Non-ionic compounds: Water
Compound in which molecules are held by ionic bonds ; with opposite charges (cations + charges and anions –ve charges ) are called IONIC compounds . These ionic compounds are generally solids with high melting points and conduct electrical current. Ionic compounds are generally formed from metal and a non-metal elements in which one or more electrons transfers from metal to non metal. Example salt, and sodium bicarbonate(baking soda).
In non Ionic compounds the chemical bonds are non ionic and share electron density .