? Q.18 Draw the lewis structure of the following- (a) SiCl4 (b) H2SO4 (c) NH3
Answers
Explanation:
steps To draw Lewis structure
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step 1 :- find the total number of valance electrons of the combining atoms .For anion , the total negative charge is added to and for cation, the total positive change is subtracted from the number of valance electrons .
ex : \: \: \: in\:SO_4^2-ex:inSO42−
total number of valance electrons = 6 + 6 × 4 +2 = 32
step 2 :- The least electronegative atom is placed at the centre, surrounded by highly electronegative atoms .
ex : \: \: \: in\:SO_4^2-ex:inSO42−
S occupies central atom surrounded by O - atoms. because
E_O > E_SEO>ES
step 3 :- Draw single bond among each atom, and then complete octet of surrounding atoms followed by central atom by assigning lone pair, double bond or triple bond.
[ in question CO3^2- missing , I added it ]
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