Chemistry - CHEMICAL BONDING Question with Solution | TestHub
How many following is/are correct? (i) Lewis base character (ii) Boiling point order (iii) Boiling point order (iv) Boiling point order (v) -bond strength order (vi) Boiling point order (vii) Boiling point order
Answer:
Solution:
All 7 statements are correct, making the final answer 7.
(i), (v): NH₃ is a stronger Lewis base due to higher electron density on the smaller N atom, and H₂O forms stronger individual H-bonds than H₂O₂ due to lower steric hindrance and higher localized negative charge.
(ii), (iii), (vi), (vii): Boiling points for these molecules (He/H₂/D₂/T₂, CCl₄/SiCl₄, BF₃/B(CH₃)₃, and CH₄/SiH₄) increase directly with increasing molecular mass and stronger van der Waals forces.
(iv): H₂O₂ has a higher boiling point than H₂O because it forms a more extensive, denser network of hydrogen bonds per molecule alongside a higher molecular mass.
