Question

a.) Draw Lewis dot structures for each molecule, b.) Identify the geometric shape of each molecule, c.) Predict whether the bonds in the molecule are polar or non polar and d.) predict whether the molecule would be considered polar molecules: a. BeF2 b. SI6 c. CCl4 d. BH2- e.SF5- f. NI3 g. BCl3 h. ClF3 i. ClO4- j. NO2

Answer 1

Solution :-

To draw the lewis structure we calculate the total valence electrons present in the molecule and put them in the structure to complete the octets of the each element.

Total valence electrons is the sum of the valence electrons of the element atoms present in the molecule. For ion the if the ion is negative then equal number of electrons as the charge present are added to total valence electrons and if the ion is positive then same number of electrons as the charge are subtracted from the total valence electrons.

When the molecule possese symmetry then it becomes non polar because the dipole moment cancel outs.

Following image shows the lewis structures for each