Draw the electron-dot structure of:-

(1) CaO (2) Na2O (3) MgCl2 (4) H2O (5) NH3

Dear Student,

MgCl2

Atomic number of the Mg  = 12

Electronic configuration of Mg  = 2  8  2

So it has two electrons in its outermost shell.

Now, atomic number of the chlorine = 17

Electronic configuration = 2 8 7

It has one electron less to complete its octet so each of the  chlorine atom will take one electron from the magnesium.

Structure is given as under:

 Cl . . Mg . .Cl

Similarly, you can draw electron dot structure for the rest of the compounds also. Please try yourself. In case of difficulty please get back to us.

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