arange incresing order of ionic covalent and vanderwall radisu
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Answer:
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Explanation:
Ionic Bond
An ionic bond, also called electrovalent bond, is formed when an atom give one or more of its extra electrons (to become stable) to the other atom which lacks one or two electrons to become stable. The compounds formed by the ionic bond are called ionic compounds.
For example, sodium chloride (NaCl) is an ionic compound, which is formed when the sodium atom (Na) give its one extra electron to the chlorine atom (CI) which lacks one electron to become stable. The sodium atom becomes a positive ion (sodium ion, Na) and the chlorine atom becomes a negative ion (chloride ion, Cl. The two oppositely charged ions are then attracted to each other to form the compound sodium chloride (NaCl).
Characteristics of Ionic Compounds
• Ionic compounds are hard and rigid due to the strong force of attraction between the oppositely charged ions.
Generally, ionic compounds are solids.
They are generally soluble in water.
They have high boiling and melting points.
They are good conductors of heat and electricity.
Covalent bond
The bond formed by sharing of electrons between two or more atoms is called a covalent bond or a molecular bond. The compound formed by a covalent bond is called a covalent compound.
For example, two chlorine atoms form a bond by sharing electrons because neither atom has a tendency to lose électrons. A chlorine atom has 7 electrons in its outermost /shell and needs one electron to become stable. Both atoms tend to gain one electron. By sharing electrons, they form a chlorine molecule (Cl). Hydrogen molecule (H) and oxygen molecule (0₂) are also formed in the same way.
Characteristics of Covalent Compounds
• Covalent compounds consist of molecules held by weak forces.
They are generally liquids or gases.
They have low boiling and melting points. They are bad conductors of heat and electricity.
Covalent compounds are usually insoluble in non polar solvents like water.
