Questions
Covalency of central atom is ‘X’. Number of lone pairs on central atom is ‘Y’. X-Y is equal to six in
detailed solution
Correct option is B
Number of electron pairs(EP)=V+M-C+A2; V=Group number of central atom; M=-H, -X, -OH....monovalent groups attached to central atom ; C=Charge of cation ; A=Charge of anion ; V=6,7,8 respectively for 16th, 17th, 18th group elements ; Number bond pairs, BP(according to VSEPR theory)=Number of atoms directly attached to central atom; =6,5,4, respectively in SF6, BrF5, XeF4 ; Number lone pairs on central atom(LP)=EP-BP ; =0,1,2 respectively in SF6, BrF5, XeF4 ; SF6-'6' bp +'0' lp on central atom; sp3d2-Squre bipyramidal (or) Octahedral ; 18 lone pairs/molecule BrF5-'5' bp +'1' lp on central atom ; sp3d2-Squre pyramidal ; 16 lone pairs/molecule XeF4-'4' bp +'2' lp on central atom ; sp3d2-Square planar ; 14 lone pairs/molecule Note; Each bonded halogen atom has '3' lone pairs on it ; Orientation of electron pairs is octahedral (or) Square bipyramidal in all the three molecules ;Similar Questions
Statement 1: In molecule, O-atom has two lone pairs, of electron.
Statement 2: The geometry of is tetrahedral due to two - hybrid orbitals.
Get your all doubts cleared from
Sri Chaitanya experts
799 666 8865
support@infinitylearn.com
6th Floor, NCC Building, Durgamma Cheruvu Road, Vittal Rao Nagar, HITEC City, Hyderabad, Telangana 500081.
JEE Mock Tests
JEE study guide
JEE Revision Notes
JEE Important Questions
JEE Sample Papers
JEE Previous Year's Papers
NEET previous year’s papers
NEET important questions
NEET sample papers
NEET revision notes
NEET study guide
NEET mock tests