Question

Question 7 4 pts Which one of the following statements about compounds or polyatomic ions of the A group elements is false? Sulfur hexafluoride is an example of a compound with a central atom that has sp3d2 hybridization All molecules in which the central element is sp3d2 hybridized have octahedral electronic geometry. All compounds in which the central atom is sp3d2 hybridized violate the octet rule. Allions in which the central atom is sp3d2 hybridized have octahedral electronic geometry. All molecules in which the central element is sp3d2 hybridized have octahedral molecular geometry. Question 8 4 pts он е п р а

Answer 1

option C is false

All compounds in which the central atom is Sp3d2hybridised violates octet rule;this sentence is false

.Some compounds such as SF6 ,PCl5, BrCl5  etc have sp3d2 hybridisation,which deviates from octet rule.

1)Central atom in them contains more than 8 electrons.

a)SF6 have 12 valence electrons

b)Brcl5 has12 valence electrons

c)Pcl5 has 10 valence electrons

2)In PCl5 ,central phosphorous is bonded to five cl atoms,thus having 10 bonding electrons and violates octet.

3)IN SF6 Central sulphur atom is bonded to six flourine atoms,so sulphur has 12 valence electrons.

4)there are mainly 3 reasons to violate octet;odd electron molecules,electron defficient molecules,expanded valence shell electrons.SF6 IS Belongs to third category.