Ncert Solutions Chemistry Class 11th

Correct order of van there Waals constant b for gases is CO₂ > N₂ > O₂ > H₂ > He

He₂ has zero bond order hence it does not exist.

B₂ have bond order equal to 1 and also paramagnetic.

$H{e}_2^{2+}{O}_2^{2-}N{e}_2^{2+}{F}_2{H}_2$ have bond order equal to 1 but are diamagnetic.

$O_2^{2+}$ have bond order equal to 3.

Proteins on hydrolysis gives α-amino acid because α-amino acids are building block of proteins. It is also fact that amino acids contain both –NH₂ and –COOH group.

(A) Fluorspar                     –    CaF₂

(B) Cryolite                 –    Na₃ [AlF₆]

(C) Bauxite                 –    Al₂O₃.2H₂O

(D) Dolomite              –    MgCO₃.CaCO₃

Release of toxic/undesirable materials in the environment.

Cu : 4s¹3d¹⁰ Cu⁺ : 4s⁰3d¹⁰

Zn : 4s²3d¹⁰ Zn²⁺ : 4s⁰3d¹⁰