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(a) Draw electron dot structure of Sodium (Na), Oxygen (O) and Magnesium (Mg). (b) Why do ionic compounds have high melting points?

(a) Draw electron dot structure of Sodium (Na), Oxygen (O) and Magnesium (Mg).
(b) Why do ionic compounds have high melting points?

Grade:12th pass

1 Answers

Adarsh Pal
askIITians Faculty 159 Points
3 years ago

(i) The representation of elements with valence electrons as dots around the elements is referred to as electron-dot structure for elements.

Electronic configuration of Sodium (Na)→2,8,1

Electron dot structure =Na∙

Electronic configuration of Oxygen (O)→2,

Electron dot structure =                         ..

                                                           ∙  O ​∙

                                                                                              ..

Electronic configuration of Magnesium (Mg)→2,8,2

Electron dot structure =Mg∙∙​

(ii) Ionic compounds have strong electrostatic forces of attraction between the ions. It requires a lot of energy to overcome these forces. Thus ionic compounds have high melting points.

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