9. Construct the Lewis structure model for the covalent compound silicor dioxide

Question

9. Construct the Lewis structure model for the covalent compound silicor dioxide (SiO2) using the following steps. (1) The total number of valence electrons in SiO2 is (2) Arranging the atomic cores appropriately, write the Lewis structure for Sio, in thebox. Use electron pairs to show the bonds between the atoms. Distribute the remaining electrons so that each atom has an octet. (3) If you have trouble placing all of the electrons, consider the possibility of using one or more double bonds in the structure. How many, if any, double bonds are required? Lewis structure of Sio2 10. Write the Lewis structure for hydrosulfide ion (HS) in the box. The total number of valence electrons in HS is Lewis structure of HS 11. Write the Lewis structure for the covalent molecule nitrogen (N) in the box. The total number of valence electrons in N2 is Lewis structure of N2

Explanation / Answer

1) Total number of valence electron in SiO2 is 4+6+6= 16 electron

2) lewis structure of SiO2:           ::O:   :Si:    :O::     Each atom is having 8 electrons

3) including double bond:       : :O: =:Si:=:O::   ; Presence of 2 double bond

10) HS- = total valence electron = 1+6+1 = 8   

structure:   H._ .:S::     Only one single bond present

11) Nitrogen valence electron 5+5 = 10

Lewis structure:         :N:.   .:N:    Presence of One triple bond

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