Saved Bookmarks
| 1. |
Consider the following five group (According to modern periodic table) of elements with their increasing order to atomic numbers : Group 1 to A, B, C, D, E "" " Group" 2 to F,G,H,I,J Group 13 to K,L,M,N,O "" " Group" 15 to P,Q,R,S,T "" " Group " 17 to U,V,W,X,Y IF first and last element of each group belongs to 2nd and 6th period respectively and Z represents to carbonate ion (CO_(3)^(2-)) then consider the following orders. (i) O^(+) gt H^(2+) , Polarising power (ii) T^(3+) gt S^(3+) gt R^(3+) , Stability of cation (iii) U^(-)(aq) gt V^(-)(aq) gt W^(-)(aq) gt X^(-)(aq), Size (iv) JV_(2) lt IV_(2) lt GV_(2) lt LV_(3) , Covalent character (v) GZ gt IZ gt JZ , Thermal stability (vi) AV gt BV gt CV gt DV gt EV , Thermal stability (vii) C_(3)P gt B_(3)P gt A_(3)P , Lattice energy (viii) KU_(3) lt KV_(3) lt KW_(3) lt KX_(3), Melting point Then calculate value of |p-q|^(2) , here p and q are correct and incorrect orders in the given eight orders respectively. |
|
Answer» G-2 F(Be),G(Mg),H(Ca),I(Sr),J(Ba) G-13 K(B),L(Al),M(Ga),N(In),O(Tl) G-15 P(N),Q(P),R(As),S(SB),T(Bi) G-17 U(F),V(Cl),W(Br),X(I),Y(At) (i) `Ti^(+) gt Ca^(2+)`, Polarising power(T) (ii) `Bi^(3+) gt Sb^(3+) gt As^(3+)`, Stability of cation (T) (iii) `F^(-)(aq) gt Cl^(-)(aq) gt Br^(-)(aq) gt I^(-) (aq)`, Size (T) (iv) `BaCl_(2) gt SrCl_(2) gt MgCl_(2) lt AlCl_(3)`, Covalent nature (T) (v) `MgCO_(3) gt CaCO_(3) gt SrCO_(3) gt BaCO_(3)` , THERMAL stability (F) (vi) `LiCl gt NaCl gt KCl gt RbCl gt CsCl`, Thermal stability (T) (vii) `K_(3)N gt Na_(3)N gt Li_(3)N` , Lattice energy (F) (viii) `BF_(3) lt BCl_(3) lt BBr_(3) lt BI_(3)`, Melting point (T) `implies |p-q|^(2)|6-2|^(2)=16` |
|