chemical bonding

Question 1

formal charge

Answer 1

total no of valence electron in the free atom - total no of non bonding electrons (lone pair)- 1/2 total no of bonding electron (shared)

Question 2

PF3 obeys octect rule but PF5 doesn’t

Answer 2

due to presence of extra energy

Question 3

examples of odd no compounds that doesn’t follow octect rule

Answer 3

NO and ClO2

Question 4

electron deficient molecules

Answer 4

BeCl2, BF3, B2H6
behaves as lewis acids

Question 5

bond enthalpy in CO,CN,N2,C2

Answer 5

CO>N2>CN>C2

Question 6

dipole strength : NH3 OR NF3

Answer 6

NH3>NF3

Question 7

what should be the size of the cation inorder to have large polaring power

Answer 7

smaller cation size and larger the anion

Question 8

AX2 geometry

Answer 8

linear - BeCl2

Question 9

AX3 geometry

Answer 9

triangular BF3

Question 10

AX2E geometry

Answer 10

bent (V shape) SO2

Question 11

AX4 geometry

Answer 11

tetrahedral CH4

Question 12

AX3E geometry

Answer 12

triangular pyramidal NH3

Question 13

AX2E2 geometry

Answer 13

bent H2O

Question 14

AX5

Question 15

AX4E

Answer 15

triangular bipyramidal PCl5

Question 16

AX3E2

Answer 16

irregular tetrahedral ( see saw) SF4

Question 17

AX2E3

Answer 17

T shaped ClF3

Question 18

AX2E3

Answer 18

linear (I)3- (IODINE 3 - )

Question 19

AX6

Answer 19

octahedral SF6

Question 20

AX5E

Answer 20

square pyramidal BrF5

Question 21

AX4E2

Answer 21

square planar XeF4

Question 22

AX7

Answer 22

pentagonal bipyramidal IF7 (iodine)

Question 23

sp

Answer 23

linear,180, becl2, bef2, co2, ccs2, c2h2, [ag(cn)2]
hgcl2, hcn

Question 24

sp2

Answer 24

triangular planar, 120, bf3,bcl3,c2h4,no3-,so3,ch3+

Question 25

sp3

Answer 25

tetrahedral,109.28, sncl4,ch4,ccl4,sif4,nh4+

Question 26

dsp2

Answer 26

square planar,90, [ptcl4], [ni(cn)4]2-

Question 27

dsp3 or sp3d

Answer 27

trigonal bipyramidal, 120 and 90, pcl5,pf5,sbf5

Question 28

d2sp3 or sp3d2

Answer 28

octahedral,90,sf6,tef6,[crf6]3-,[co(nh3)6]3+

Question 29

d3sp3 or sp3d3

Answer 29

pentagonal bipyramidal,72 and 90, IF7

Question 30

read fingertips page 74

Answer 30

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