Write the electron-dot structure for sodium and chlorine atoms. How do these form a chemical bond? Name the type of bond so formed. Why does a compound so formed have high melting point?

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Solution

Electron dot structure:

Sodium has only one electron in its valence shell while chlorine has seven electrons in its valence shell. So, to achieve a noble gas configuration sodium will lose its electron and chlorine will accept those electrons to complete its octet. Formation of this type of bond is known as an ionic bond.

The ionic bond which is formed between Na and Cl is a strong bond where the Na and Cl atoms are strongly attracted to each other. It requires lot of energy to break this bond due to which they have high melting point.

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