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The total number of species from the following in which one unpaired electron is present, is . N2, O2, C2-, O2-, O22-, H2+, CN-, He2+
4
Using MO theory (electrons in brackets):
N2 (14): all paired, 0; CN- (14): 0; O22- (18): 0
O2 (16): 2px1 2py1, so 2 unpaired
C2- (13): 2pz1, 1; O2- (17): 2p3, 1
H2+ (1): 1s1, 1; He2+ (3): 1s1, 1
Hence 4 species (C2-, O2-, H2+, He2+).
Answer: 4
The correct increasing order for bond angles among BF3, PF3 and ClF3 is :
Total number of electrons present in ( ) molecular orbitals of O2, O2+ and O2- is .
Match List I with List II Choose the correct answer from the options given below:
Number of molecules from the following which are exceptions to octet rule is . CO2, NO2, H2SO4, BF3, CH4, SiF4, ClO2, PCl5, BeF2, C2H6, CHCl3, CBr4
When A and B are the wave functions of atomic orbitals, then is represented by :
Number of molecules having bond order 2 from the following molecules is . C2, O2, Be2, Li2, Ne2, N2, He2
Match List I with List II Choose the correct answer from the options given below:
Match List I with List II Choose the correct answer from the options given below:
Match List I with List II Choose the correct answer from the options given below:
Number of molecules from the following which can exhibit hydrogen bonding is . (nearest integer) CH3OH, H2O, C2H6, C6H6, [figure] , HF, NH3