The IUPAC name of A and B are :-

In the following reaction

Identify 'B' ?

Magnetic moment of Xⁿ⁺ (Z = 26) is √24 B.M. Hence, number of unpaired electrons and value of n respectively are :

The give successive ionisation energies of an element X are 800, 1427, 2658, 25024 and 32824 kJ mol^-1 respectively. The valency of X is :

Which order are correct ? 

(I) Thermal stability : Li₂CO₃ < Na₂CO₃ < K₂CO₃
     < Rb₂CO₃ < Cs₂CO₃

(II) Solubility in water : Be (OH)₂ < Mg(OH)₂
     < Ca (OH)₂ < Sr(OH)₂ < Ba(OH)₂

(III) Basic nature : Li₂O < Na₂O < K₂O
     < Rb₂O < Cs₂O

(IV) Melting point : NaCl > MgCl₂ > AlCl₃

Which oxide is a basic oxide:

Statement-1 : The bond angle in BF₃ is smaller than that in BF₄^–.

Statement-2 : BF₃ has sp²-hybridisation, whereas BF₄^– has sp³-hybridisation.

Given the following bond enthalpies :

BE(N≡N) =942 kJ/mol ; BE(H–H) =436 kJ/mol ;

BE(N–N) =163 kJ/mol ; BE(N–H) =390 kJ/mol

Determine enthalpy change for the following polymerisation reaction per mole of N₂(g) consumed -

nN₂(g) + nH₂(g) → –(– NH – NH –)_n–

The decomposition of azo methane, at certain temperature according to the equation (CH₃)2N₂ → C₂H₆ + N₂ is a first order reaction. After 40 minutes from the start, the total pressure developed is found to be 350 mm of Hg in place of initial 200 mm of Hg of azo methane. The value of rate constant K is :-

Which of the following option show correct matches :-