Title Chemial Bonding - 3.pdf ✅

1 JEE ADVANCED 2024 Chemial Bonding 1. In which of the dimerisation process, the achievement of the octet is not the driving force. (1) 2AlCl3 ⎯→ Al2Cl6 (2) BeCl2 ⎯→ BeCl2 (solid Bksl) (3) 2lCl3 ⎯→ I2Cl6 (4) 2NO2 ⎯→ N2O4 2. The molecule is not having 3c – 2e bond. (1) BeH2 (dimer) (2) BeH2 (solid) (3) C2H6 (4) B2H6 3. Bond order is a concept in the molecular orbital theory. It depends on the number of electrons in the bonding and antibonding orbitals. Which of the following statements is true about it ? The bond order (1) Can have a negative quantity (2) Has always an integral value (3) Can assume any positive or integral or fractional value excluding zero (4) Is a non zero quantity 4. Which of the following is the strongest oxy-acid among the following : (1) H2SO4 (2) H3PO4 (3) HClO4 (4) H2SiO3 5. S1  The HOMO in F2 – is 2px = 2py molecular orbitals. S2  Bond order of O2 – is more then O2 + . S3  NO+ is more stable than N2 + . S4  C2 is more stable than C2 + . State, in order, whether S1, S2, S3, S4 are true or false (1) FFFT (2) FTTT (3) FTFT (4) FFTT 6. Which of the following is correct increasing order of Basic character. (1) MgO < K2O < Cs2O < CaO (2) MgO < CaO < K2O < Cs2O (3) Cs2O < K2O < CaO < MgO (4) K2O < Cs2O < MgO < CaO 7. Match the orbital overlap figures shown in List-I with the description given in List-II and select the correct answer using the code given below the lists. List-I List-II P. 1. p–d  antibonding Q. 2. d–d  bonding R. 3. p–d  bonding S. 4. d–d  antibonding Code : P Q R S (1) 2 1 3 4 (2) 4 3 1 2 (3) 2 3 1 4 (4) 4 1 3 2 8. According to Molecular orbital Theory, true statements are (1) C2 2– is expected to be diamagnetic (2) O2 2+ is expected to have a longer bond length than O2 (3) N2 + and N2 – have the same bond order (4) He2 + has the same energy as two isolated He atoms 9. Which among the following pair is are amphoteric. (1) CO2 & SiO2 (2) BeO & MgO (3) Al2O3 & ZnO (4) PbO & SnO2 10. How many of the following are paramagnetic. O2 – , NO, CN– , O2, N2, He2, 2 O2 − DPP - 3