List of top Chemistry Questions on Inorganic chemistry

Compare the energy of orbitals for multielectronic species : (A) \(n = 3, \ell = 0, m = 0\)
(B) \(n = 3, \ell = 1, m = -1\)
(C) \(n = 4, \ell = 2, m = 0\)
(D) \(n = 3, \ell = 2, m = 1\)

Statement-I : The electronegativity order in F, O, N is \(F > O > N\).
Statement-II : Oxidation state of O in \(OF_2\) is \(+2\) and in \(Na_2O\) is \(-2\). Choose the correct option.

Which of the following property about Interstitial compound is INCORRECT?

Consider the statements. (A) \( \text{N} - \text{N} > \text{P} - \text{P} \) (Bond energy of single bond)
(B) All oxidation states of N lying between \(+1\) and \(+4\) tend to disproportionate in acidic medium.
(C) Maximum covalency of nitrogen is 4
(D) Nitrogen can form \(d\pi - p\pi\) bond with itself and other elements.
(E) Nitrogen has maximum density in its group due to its small size
The incorrect statements are:

Statement I : Sodium and Potassium dichromate are used as a primary standard in redox titrations.
Statement II : Phenolphthalein is weakly basic in nature hence it dissociates in acidic medium.

From the following, number of compounds with \(sp^3d\) hybridisation are: \[ XeF_4,\; ICl_4^-,\; ICl_2^-,\; XeF_5^-,\; SF_4,\; XeF_2,\; ClF_3,\; BrF_5,\; NH_4^+ \]

Consider the following statements (A) Ground state electronic configuration of Cr is \([Ar]\,4s^1 3d^5\)
(B) Size of \(2p_x\) orbital is smaller than \(3p_y\)
(C) Heisenberg uncertainty principle is applicable only for electron.
(D) (Energy of \(2s\))$_{Hydrogen}$ = (Energy of \(2s\))$_{Lithium}$
The correct statements are

Statement I : BP order is HI<HBr<HCl<HF.
Statement II : MP order is HI<HF<HCl<HBr.

The correct set that contains all kinds of oxides (Basic, acidic, amphoteric, and neutral) is:

Statement-I : The correct order of Ionization energy is $Na > Mg > Al > Ar$
Statement-II : Among the following elements $Sc, Ca$ and $Mg, Ca$ has highest $3^{rd}$ Ionisation Energy.

Statement-I : The correct increasing order of bond length among the following is $O_2^+ < O_2 < O_2^- < O_2^{2-}$.
Statement-II : The correct order of number of unpaired electrons is $O_2^{2-} < O_2^+ < O_2^- < O_2$.

Cation of salt A when treated in flame gives apple green colour. When salt A is heated with Chromate solution gives yellow precipitate & when salt is heated with conc $HNO_3$ & Ammionium molybdate it gives canary yellow ppt. Salt A contains :

Given $K_{SP}(Ag_2C_2O_4) = 32X$, $K_{SP}(AgBr) = 4Y$. Find ratio of solubility of the given salts in pure water

In the following reaction, \[ {MnO4^{2-} \xrightarrow{H^+} \, ?} \] Manganate ion undergoes disproportionation to form:

What is Lanthanoid contraction? What are the causes and effects of Lanthanoid contraction?

Give the electronic configuration of Ce⁴⁺ and Co²⁺.

Mention the type of hybridisation in the following compounds:
(a) BrF₅ (b) BrF₃

Which of the following statements is incorrect?

XeF₆ on complete hydrolysis produces:

Given below are two statements :
Statement I : The correct order in terms of atomic/ionic radii is \( Al>Mg>Mg^{2+}>Al^{3+} \).
Statement II : The correct order in terms of the magnitude of electron gain enthalpy is \( Cl>Br>S>O \).
In the light of the above statements, choose the correct answer from the options given below :

On heating a mixture of common salt and \( K_2Cr_2O_7 \) in equal amount along with concentrated \( H_2SO_4 \) in a test tube, a gas is evolved. Formula of the gas evolved and oxidation state of the central metal atom in the gas respectively are :

Find the number of P–O–P (pyrophosphate) bonds present in $P_4O_8$.

The magnetic behavior of a compound with all electrons paired is: