Henry’s constant (in kbar) for four gases $$\alpha $$, $$\beta $$, $$\gamma $$ and $$\delta $$ in water at 298 K is given below :

	$$\alpha $$	$$\beta $$	$$\gamma $$	$$\delta $$
KH	50	2	2 $$ \times $$ 10-5	0.5

(density of water = 10³ kg m^-3 at 298 K)
This table implies that :

The atomic number of the element unnilennium is :

An organic compound [A], molecular formula C₁₀H₂₀O₂ was hydrolyzed with dilute sulphuric acid to give a carboxylic acid [B] and an alcohol [C]. Oxidation of [C] with
CrO₃ - H₂SO₄ produced [B]. Which of the following strucutres are not possible for [A]?

The electronic spectrum of [Ti(H₂O)₆]³⁺ shows a single broad peak with a maximum at 20,300 cm^-1 . The crystal field stabilization energy (CFSE) of the complex ion, in kJ mol^-1, is :