p-Block Elements

Correct statement(s) about the compounds X, Y and Z is(are)

$\ce{MnO2 + Conc. HCl -> MnCl2}$ + X (greenish yellow gas) + $\ce{H2O}$

$\ce{NH3}$ + X (excess) $\longrightarrow$ Y + HCl

X + $\ce{F2}$ (excess) $\xrightarrow{573\ \mathrm K}$ Z

Reaction of $\ce{PtF6}$ with oxygen $(\ce{O2})$ gas results in the formation of an ionic compound, $\mathbf X^+\mathbf Y^-$. Correct statement(s) is(are)

Correct statement(s) about the compounds P, Q and R is(are)

$\ce{Xe(g) + F2(g)}$ (1 : 5 ratio) $\xrightarrow{873\ \mathrm K,\ 7\ \mathrm{bar}}$ P

P + $\ce{O2F2}$ $\xrightarrow{143\ \mathrm K}$ Q + $\ce{O2}$

Q + $\ce{H2O}$ $\xrightarrow{\text{complete hydrolysis}}$ R + HF

Given below are two statements :

Statement (I) : Oxidising power of halogens decreases in the order $\ce{F2} > \ce{Cl2} > \ce{Br2} > \ce{I2}$, which is the basis of "Layer test".

Statement (II) : "Layer test" to identify $\ce{Br2}$ and $\ce{I2}$ in aqueous solution involves the oxidation of bromide or iodide into $\ce{Br2}$ or $\ce{I2}$ respectively with $\ce{Cl2}$, which is a type of displacement redox reaction.

In the light of the above statements, choose the correct answer from the options given below :

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

Given below are two statements :

Statement I : The second ionization enthalpy of B, Al and Ga is in the order of B > Al > Ga.

Statement II : The correct order in terms of first ionization enthalpy is Si < Ge < Pb < Sn.

In the light of the above statements, choose the correct answer from the options given below :

Given below are two statements:

Statement I: The covalency of oxygen is generally two but it can exceed upto four. The oxidation state of oxygen in $\ce{SO2}$ is −2 and in $\ce{OF2}$ it is +2.

Statement II: The anomalous behaviour of oxygen when compared to the other elements of group 16 is due to its small size and high electronegativity.

In the light of the above statements, choose the correct answer from the options given below

According to Lewis theory, the total number of σ bond-pairs and lone pair of electrons around the central atom of $\ce{XeO6^{4-}}$ ion is ________.

The electronegativity of a group 13 element 'E' is same as that of Ge (on Pauling scale and upto one decimal point). The CORRECT statements about $\ce{E^{3+}}$ are

A. It can act as a reducing agent.

B. It can act as an oxidizing agent.

C. $\ce{E^{3+}}$ is more stable than $\ce{E+}$.

D. The standard electrode potential value for $\ce{E^{3+}}$/E is positive.

Choose the correct answer from the options given below:

Correct statements from the following are:

A. Nitrogen in oxidation states from +1 to +4 disproportionates in acid medium.

B. Nitrogen has the ability to form dπ - pπ multiple bonds with itself and other elements with small size and high electronegativity.

C. N-N single bond is stronger than P-P single bond.

D. Nitrogen has highest density in its group due to small size.

E. The maximum covalency of nitrogen is four since it has only four valence orbitals for bonding.

Choose the correct answer from the options given below:

Given below are two statements :

Statement I: Aluminium upon reaction with NaOH forms $\ce{[Al(OH)6]^3-}$ ion.

Statement II: The geometry of $\ce{ICl4-}$, $\ce{ClO3-}$ and $\ce{IBr2-}$ is square planar, pyramidal and linear respectively.

In the light of the above statements, choose the correct answer from the options given below :

A paper dipped in a dil. $\ce{H2SO4}$ solution of 'X' upon treatment with $\ce{SO2}$ gas turns into green. The compound 'X' is :

Given below are two statements:

Statement I: Aluminium is more electropositive than thallium as the standard electrode potential value of $E^\circ_{\ce{Al^3+}/\ce{Al}}$ is negative and $E^\circ_{\ce{Tl^3+}/\ce{Tl}}$ is positive.

Statement II: The sum of first three ionization enthalpies of boron is very high when compared to that of aluminium. Due to this reason boron forms covalent compounds only and aluminium forms $\ce{Al^3+}$ ion.

In the light of the above statements, choose the correct answer from the options given below

Given below are two statements :

Statement I : $\ce{F2O}<\ce{H2O}<\ce{Cl2O}$ is the correct trend in terms of bond angle.

Statement II : $\ce{SiF4}$, $\ce{SnF4}$ and $\ce{PbF4}$ are ionic in nature.

In the light of the above statements, choose the correct answer from the options given below :

Bromine trifluoride autoionizes to form $\ce{BrF2+}$ and $\ce{BrF4-}$. The shapes of the cation and anion are respectively ________, and ________.

Find the correct statements related to group 15 hydrides.

A. Reducing nature increases from $\ce{NH3}$ to $\ce{BiH3}$

B. Tendency to donate lone pair of electrons decreases from $\ce{NH3}$ to $\ce{BiH3}$

C. The stability of hydrides decreases from $\ce{NH3}$ to $\ce{BiH3}$

D. HEH bond angle decreases from $\ce{NH3}$ to $\ce{SbH3}$ (E = Elements of group 15)

Choose the correct answer from the options given below :

The heating of $\ce{NH4NO2}$ at 60−70 °C and $\ce{NH4NO3}$ at 200−250 °C is associated with the formation of nitrogen containing compounds X and Y, respectively. X and Y, respectively, are

The complete hydrolysis of $\ce{ICl}$, $\ce{ClF3}$ and $\ce{BrF5}$, respectively, gives

The compound(s) with P-H bond(s) is(are)

At room temperature, disproportionation of an aqueous solution of in situ generated nitrous acid ($\ce{HNO2}$) gives the species