Question

For these elements PCl3, H2O2, CH2O, N2, CO2, O3, NO3-, NO2, PCl, SiF6^-2, SF4, I3-, IF5, XeF4, H3O+. Give the following:

available Electrons (AE),

Needed Electrons (NE),

Geometry Description,

Number of sigma bonds,

Number of pi bonds

Answer 1

S.No	Compound	Available Electrons (AE),	Needed Electrons (NE),( total for molecule as whole)	Geometry Description,	Number of sigma and pi bonds
1	PCl3,	5X1 + 7X3 = 26	10	Pyramidal	3sigma bond
2	H2O2	2X1+6X2 = 14	4	Bent	4sigma bonds
3	CH2O,	4+2+6=12	6	Linear	3sigma + 1pi
4	CO2,	4+2X6=16	2	Linear	2sigma + 2pi
5	O3,	3X6=18	0	linear	2sigma + 2pi
6	N2,	2X5=10	8	linear	Sigma +2pi
7	NO3-	5+3X6+1=24	12	Trigonal planar	3sigma+1pi
8	NO2,	5+2X6=23	13	Trigonal geometry	2sigma + 2pi
9	, PCl,	Not known compound
10	SiF6^-2	4+7X6=46		octahedral	6 sigma
11	SF4,	6+7X4=34	2	Distorted trigonal bipyramidal	4sigma bonds
12	I3-,	22	14	Linear	2 sigma
13	IF5,	7+7X5=42	12	Square pyramidal	5 sigma
14	XeF4,	8+7X4 = 36	0	Square planar	4sigma
15	H3O+	3+6-1 =8	2	Trigonal pyramidal	3 sigma