NEET UG 2015 — Inorganic Chemistry

Decreasing order of stability of ${O}_{2}, {O}_{2}^{-}, {O}_{2}^{+}$ and ${O}_{2}^{2-}$ is:

Gadolinium belongs of 4f series. Its atomic number is 64. Which of the following is the correct electronic configuration of gadolinium?

In which of the following pairs, both the species are not isostructural?

Maximum bond angle at nitrogen is present in which of the following?

Nitrogen dioxide and sulphur dioxide have some properties in common. Which property is shown by one of these compounds, but not by the other?

Spin only magnetic moment $2.84 \mathrm{BM}$ is given by: (Atomic Number of $\mathrm{Ni}=28,\mathrm{Ti}=22,\mathrm{Cr}=24,\mathrm{Co}=27$)

Strong reducing behaviour of ${H}_{3}P{O}_{2}$ is due to:

The correct bond order in the following species is:

The enolic form of ethyl acetoacetate as below has: 

The formation of the oxide ion, ${O}^{2-}(g)$ , from oxygen atom requires first an exothermic and then an endothermic step as shown in below: $O(g)+{e}^{-}\longrightarrow {O}^{-}(g) ; {\Delta }_{f}{H}^{\ominus }=-141 kJ mo{l}^{-1}$ ${O}^{-}(g)+{e}^{-}\longrightarrow {O}^{2-} (g) ; {\Delta }_{f}{H}^{\ominus }=+780 kJ mo{l}^{-1}$ Thus process of formation of ${O}^{2-}$ in gas phase is unfavourable though ${O}^{2-}$ is isoelectronic with neon. It is due to the fact that,

The hybridization involved in complex ${[Ni{(CN)}_{4}]}^{2-}$ is: (Atomic number of Ni = 28)

The name of complex ion, ${[Fe{(CN)}_{6}]}^{3-}$ is :

The species $Ar, {K}^{+}$ and $C{a}^{2+}$ contain the same number of electrons. In which order do their radii increase?

The stability of +1 oxidation state among $\text{Al, Ga, In}$ and $\text{Tl}$ increases in the sequence:

The sum of coordination number and oxidation number of metal M in the complex $[M{(en)}_{2}({C}_{2}{O}_{4})]Cl$ (Where en is ethylenediamine) is:

The total number of $\pi$ -bond electrons in the following structure is: 

The variation of the boiling points of the hydrogen halides is in the order $HF>HI>HBr>HCl$ . Which of the following option explains the higher boiling point of hydrogen fluoride?

Which of the following options represents the correct bond order?

Which of the following species contains equal number of $\sigma$ - and $\pi$ - bonds?

Which of the statement given below is incorrect?

Which of these statements about ${[Co{(CN)}_{6}]}^{3-}$ is true?