NEET UG 2005 — Chemistry Inorganic Chemistry

Which of the following is the most electronegative element?

Which of the following statements are true? A. Unlike Ga that has a very high melting point, Cs has a very low melting point. B. On Pauling scale, the electronegativity values of N and Cl are not the same. C. $\mathrm{Ar}, \mathrm{K}^{+}, \mathrm{Cl}^{-}, \mathrm{Ca}^{2+}$, and $\mathrm{S}^{2-}$ are all isoelectronic species. D. The correct order of the first ionization enthalpies of $\mathrm{Na}, \mathrm{Mg}, \mathrm{Al}$, and Si is $\mathrm{Si}\gt\mathrm{Al}\gt\mathrm{Mg}\gt\mathrm{Na}$. E. The atomic radius of Cs is greater than that of Li and Rb . Choose the correct answer from the options given below

Given below are two statements: Statement I : Like nitrogen that can form ammonia, arsenic can form arsine. Statement II : Antimony cannot form antimony pentoxide. In the light of the above statements, choose the most appropriate answer from the options given below:

The correct order of the wavelength of light absorbed by the following complexes is, A. $\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{3+}$ B. $\left[\mathrm{Co}(\mathrm{CN})_6\right]^{3-}$ C. $\left[\mathrm{Cu}\left(\mathrm{H}_2 \mathrm{O}\right)_4\right]^{2+}$ D. $\left[\mathrm{Ti}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+}$ Choose the correct answer from the options given below:

Match List - I with List - II $\begin{array}{llll} & \text{List-I} & & \text{List-II} \\A. & \mathrm{XeO}_3 & I. & \mathrm{sp}^3 \mathrm{~d}, \text{linear} \\B. & \mathrm{XeF}_2 & II. & \mathrm{sp}^3 ; \text{pyramidal} \\C. & \mathrm{XeOF}_4 & III. & \mathrm{sp}^3 \mathrm{~d}^3 ; \text{distorted octahedral} \\D. & \mathrm{XeF}_6 & IV. & \mathrm{sp}^3 \mathrm{~d}^2 ; \text{square pyramidal}\end{array}$ Choose the correct answer from the options given below: