The inceasing order of reactivity among group 1 elements is `Li lt Na lt K lt Rb lt CS` whereas that among group 17 is `F gt Cl gt Br gt I`. Explain .

Prove that In (1 + x) lt "x for x" gt 0

Statement 1: The correct order of equivalent conductance at infinite dilution is LiCl gt NaCl gt KCl Statement 2: In case of alkali metal ions, the hydration tendency follows the order LI^(+) lt Na^(+) lt K^(+)

Which of the following options are true (T) and which are false (F) ? (i) Ionic mobility is the highest for I^- in water as compared to other halides (ii) Stability order is: Cl_3^(-) gt Br_3^(-) gt I_3^(-) (iii) Reactivity order is: F lt Cl lt Br lt I ( iv) Oxidizing power order is: F_2 lt Cl_2 lt Br_2 lt I_2

Consider the following statements and arrange in the order of true or false I) Group 2 elements are known as alkaline earth metal except Be II) Be has the highest standard reduction potential among group 2 members III) Mg burns with dazzling brilliance in air to give MgO and Mg (NO_(3))_(2) IV) Calcium and barium metals are used to remove air from vacuum tubes (1) TTTT (2) FFFF (3) TTFT (4) TFFT

A student arranged the halide ions in the increasing order of polarisabillity as: F lt I lt Cl lt Br. Is this the correct order? If not write it in correct order

Among the second period elements the actual ionisation enthaply are in the order Li lt B ltBe lt C lt O ltN lt F lt Ne explain why O has lower Delta IH than N and F ?

Which are correct statements: (A) Oxides of Bromine are most stable (B) Fluorine form 2 oxides and iodine oxide decompose on heating ( C) Acidity and reducing power of HX acids follow the order HF gt HCl gt HBr gt HI ( D) Fluorine form only one oxoacid HOF and the acidity of oxoacids of chlorine HOCl lt HClO_(2) lt HClO_(3) lt HClO_(4)