Arrange the following in order of increasing;(A) Dipole moment of H2O,

1.	Arrange the following in order of increasing;(A) Dipole moment of H2O, H2S , BF3 (B) Covalent character of LiCl, LiBr , LiI (C) Covalent character of NaCl , MgCl2 , AlCl3
Answer» (A) BF₃ is a symmetrical molecule. It has zero dipole moment. Oxygen being more electronegative than S, bond moment of O-H is more than S-H. So the dipole moment are in the order of BF₃<H₂S<H₂O. (B) The anion size in increasing order is Cl^-<Br^-<I^-. Hence LiCl is least covalent than LiI . The order is LiCl<LiBr<LiI. (C) Cation size in decreasing order is Na⁺ >Mg²⁺ >Al³⁺. Thus Al³⁺ ion has maximum polarization effect and Na⁺ ion has least. Thus the covalent order is NaCl <MgCl₂<AlCl₃

Arrange the following in order of increasing;(A) Dipole moment of H2O, H2S , BF3 (B) Covalent character of LiCl, LiBr , LiI (C) Covalent character of NaCl , MgCl2 , AlCl3

Answer»

(A) BF₃ is a symmetrical molecule. It has zero dipole moment. Oxygen being more electronegative than S, bond moment of O-H is more than S-H. So the dipole moment are in the order of BF₃<H₂S<H₂O.

(B) The anion size in increasing order is Cl^-<Br^-<I^-. Hence LiCl is least covalent than LiI . The order is LiCl<LiBr<LiI.

(C) Cation size in decreasing order is Na⁺ >Mg²⁺ >Al³⁺. Thus Al³⁺ ion has maximum polarization effect and Na⁺ ion has least. Thus the covalent order is NaCl <MgCl₂<AlCl₃

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Arrange the following in order of increasing;(A) Dipole moment of H2O, H2S , BF3 (B) Covalent character of LiCl, LiBr , LiI (C) Covalent character of NaCl , MgCl2 , AlCl3

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