p-Block Elements — JEE Main PYQs

Given below are two statements:

Statement I: The number of pairs among [${\mathrm{SiO}}_2,{\mathrm{CO}}_2$], $\left[\mathrm{SnO},{\mathrm{SnO}}_2\right],\left[\mathrm{PbO},{\mathrm{PbO}}_2\right]$ and $\left[\mathrm{GeO},{\mathrm{GeO}}_2\right]$, which contain oxides t …

A 'p'-block element (E) and hydrogen form a binary cation ${\left({\mathrm{EH}}_{\mathrm{x}}\right)}^{+}$, while ${\mathrm{EH}}_3$ on treatment with ${\mathrm{K}}_2{\mathrm{HgI}}_4$ in alkaline medium gives a precipitate of basic mercury(II)amido-iodine. Given below are first …

Given below are two statements :

Statement I: The halogen that makes longest bond with hydrogen in HX, has the smallest covalent radius in its group.

Statement II : A group 15 element's hydride ${\mathrm{EH}}_3$ has the lowest boiling point among corresponding hydrides of oth …

Two p-block elements X and Y form fluroides of the type ${\mathrm{EF}}_3$. The fluoride compound ${\mathrm{XF}}_3$ is a Lewis acid and ${\mathrm{YF}}_3$ is a Lewis base. The hybridization of the central atoms of ${\mathrm{XF}}_3$ and ${\mathrm{YF}}_3$ respectively are

Given below are two statements:

Statement I: The correct order in terms of bond dissociation enthalpy is ${\mathrm{Cl}}_2>{\mathrm{Br}}_2>{\mathrm{F}}_2>{\mathrm{I}}_2$
Statement II: The correct trend in the covalent character of the metal halides is …

Given below are two statements :

Statement-I : Element ' X ' and ${}^{\prime }\mathrm{Y}$ ' are the most and least electronegative elements, respectively among $\mathrm{N},\mathrm{As},\mathrm{Sb}$ and P . The nature of the oxides ${\mathrm{X}}_2{\mathrm{O}}_3$ and …

Which statements are NOT TRUE about ${\mathrm{XeO}}_2{\mathrm{F}}_2$?
A. It has a see-saw shape.
B. Xe has 5 electron pairs in its valence shell in ${\mathrm{XeO}}_2{\mathrm{F}}_2$.
C. The $\mathrm{O}-\mathrm{Xe}-\mathrm{O}$ bond angle is close to $180^{\circ }$.
D. Th …

Choose the INCORRECT statement

Regarding the hydrides of group 15 elements ${\mathrm{EH}}_3$ ( $\mathrm{E}=\mathrm{N},\mathrm{P},\mathrm{As},\mathrm{Sb}$ ), select the correct statement from the following:
A. The stability of hydrides decreases down the group.
B. The basicity of hydrides decreases down …

Given below are two statements :

Statement I : The increasing order of boiling point of hydrogen halides is $\mathrm{HCl}<\mathrm{HBr}<\mathrm{HI}<\mathrm{HF}$.
Statement II : The increasing order of melting point of hydrogen halides is …

Consider the following reactions.
${\mathrm{Na}}_2{\mathrm{B}}_4{\mathrm{O}}_7\stackrel{\Delta }{\to }2\mathrm{X}+\mathrm{Y}$
${\mathrm{CuSO}}_4+\mathrm{Y}\stackrel{\text{Non-Luminous flame}}{\to }\mathrm{Z}+{\mathrm{SO}}_3$
$2\mathrm{Z}+2\mathrm{X}+$ Carbon …

Given below are two statements :

Statement (I) : Oxidising power of halogens decreases in the order ${\mathrm{F}}_2>{\mathrm{Cl}}_2>{\mathrm{Br}}_2>{\mathrm{I}}_2$, which is the basis of "Layer test".

Statement (II): "Layer test" to identify ${\mathrm{Br}}_2$ and …

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 $\mathrm{SO}{}_2$ is -2 and in $\mathrm{OF}{}_2$ it is +2.

Statement II: The anomalous behaviour of oxygen when compared to the other elements o …

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 E³⁺ are
A. It can act as a reducing agent.
B. It can act as an oxidizing agent.
C. E³⁺ is more stable than E⁺.
D. The standard electro …

Correct statements from the following are :
A. Nitrogen in oxidation states from +1 to +4 disproportionates in acid medium.
B. Nitrogen has the ability of form $\mathrm{d}\pi -\mathrm{p}\pi$ multiple bonds with itself and other elements with small size and high electronegativi …

Given below are two statements :

Statement-I : Aluminium is more electropositive than thallium as the standard electrode potential value of ${\mathrm{E}}_{{\mathrm{Al}}^{3+}/\mathrm{Al}}^{\mathrm{o}}$ is negative and ${\mathrm{E}}_{{\mathrm{Tl}}^{3+}/\mathrm{Tl}}^{\mathrm{o}}$ is po …

Treatment of a gas 'X' with a freshly prepared ferrous sulphate solution gives a compound 'Y' as a brown ring. The compounds X and Y are.

Find the correct statements related to group 15 hydrides.
A. Reducing nature increases from ${\mathrm{NH}}_3$ to ${\mathrm{BiH}}_3$
B. Tendency to donate lone pair of electrons decreases from ${\mathrm{NH}}_3$ to ${\mathrm{BiH}}_3$
C. The stability of hydrides decreases from …

The maximum covalency of a non-metallic group 15 element 'E' with weakest $\mathrm{E}-\mathrm{E}$ bond is :

The species which does not undergo disproportionation reaction is :

The large difference between the melting and boiling points of oxygen and sulphur may be explained on the basis of

The incorrect statements among the following is

Consider the following elements $\mathrm{In},\mathrm{Tl},\mathrm{Al},\mathrm{Pb},\mathrm{Sn}$ and Ge.

The most stable oxidation states of elements with highest and lowest first ionisation enthalpies, respectively, are

Given below are the atomic numbers of some group 14 elements. The atomic number of the element with lowest melting point is :

A group 15 element forms $\mathrm{d}\pi -\mathrm{d}\pi$ bond with transition metals. It also forms hydride, which is a strongest base among the hydrides of other group members that form $\mathrm{d}\pi -\mathrm{d}\pi$ bond. The atomic number of the element is ____.

First ionisation enthalpy values of first four group 15 elements are given below. Choose the correct value for the element that is a main component of apatite family :

The property/properties that show irregularity in first four elements of group-17 is/are :
(A) Covalent radius
(B) Electron affinity
(C) Ionic radius
(D) First ionization energy
Choose the correct answer from the options given below:

The nature of oxide ( ${\mathrm{TeO}}_2$ ) and hydride ( ${\mathrm{TeH}}_2$ ) formed by Te , respectively are :

Given below are two statements

Statement I: The N-N single bond is weaker and longer than that of $\mathrm{P}-\mathrm{P}$ single bond
Statement II : Compounds of group 15 elements in $+3$ oxidation states readily undergo disproportionation reactions.
In the light of above statem …

Given below are two statements:

Statement I: Nitrogen forms oxides with +1 to +5 oxidation states due to the formation of $\mathrm{p}\underline{\pi }-\mathrm{p}\pi$ bond with oxygen.
Statement II: Nitrogen does not form halides with +5 oxidation state due to the absence of d-or …

Given below are the pairs of group 13 elements showing their relation in terms of atomic radius.
$(\mathrm{B}<\mathrm{Al}),(\mathrm{Al}<\mathrm{Ga}),(\mathrm{Ga}<\mathrm{In})$ and $(\mathrm{In}<\mathrm{Tl})$
Identify the elements present in the incorrect pair and in that pair …

The correct statements from the following are :
(A) ${\mathrm{Tl}}^{3+}$ is a powerful oxidising agent
(B) ${\mathrm{Al}}^{3+}$ does not get reduced easily
(C) Both ${\mathrm{Al}}^{3+}$ and ${\mathrm{Tl}}^{3+}$ are very stable in solution
(D) ${\mathrm{Tl}}^{+}$ is more stable than …

The group 14 elements A and B have the first ionisation enthalpy values of 708 and $715\mathrm{kJ}{\mathrm{mol}}^{-1}$ respectively. The above values are lowest among their group members. The nature of their ions ${\mathrm{A}}^{2+}{\mathrm{B}}^{4+}$ respectively is

Given below are two statements:

Statement I: ${\mathrm{H}}_2\mathrm{Se}$ is more acidic than ${\mathrm{H}}_2\mathrm{Te}$.
Statement II: ${\mathrm{H}}_2\mathrm{Se}$ has higher bond enthalpy for dissociation than ${\mathrm{H}}_2\mathrm{Te}$.

In the light of the above statements, choose t …

Number of elements from the following that CANNOT form compounds with valencies which match with their respective group valencies is ______.
B, C, N, S, O, F, P, Al, Si

When ${\mathrm{MnO}}_2$ and ${\mathrm{H}}_2{\mathrm{SO}}_4$ is added to a salt (A), the greenish yellow gas liberated as salt (A) is :

Given below are two statements :

Statement I: In group 13, the stability of +1 oxidation state increases down the group.
Statement II: The atomic size of gallium is greater than that of aluminium.
In the light of the above statements, choose the most appropriate answer from the …

The number of neutrons present in the more abundant isotope of boron is ' x '. Amorphous boron upon heating with air forms a product, in which the oxidation state of boron is ' y '. The value of $\mathrm{x}+\mathrm{y}$ is ...

The correct statements from the following are :
(A) The decreasing order of atomic radii of group 13 elements is $\mathrm{Tl}>\mathrm{In}>\mathrm{Ga}>\mathrm{Al}>\mathrm{B}$.
(B) Down the group 13 electronegativity decreases from top to bottom.
(C) Al dissolves in dil. HCl and …

Given below are two statements :

Statement I : Gallium is used in the manufacturing of thermometers.

Statement II : A thermometer containing gallium is useful for measuring the freezing point ( 256 K ) of brine solution.

In the light of the above statement, choose the correct …

The number of ions from the following that are expected to behave as oxidising agent is:
${\mathrm{Sn}}^{4+},{\mathrm{Sn}}^{2+},{\mathrm{Pb}}^{2+},{\mathrm{Tl}}^{3+},{\mathrm{Pb}}^{4+},{\mathrm{Tl}}^{+}$

Evaluate the following statements related to group 14 elements for their correctness.
(A) Covalent radius decreases down the group from C to Pb in a regular manner.
(B) Electronegativity decreases from C to Pb down the group gradually.
(C) Maximum covalence of C is 4 whereas othe …

Identify the incorrect statements about group 15 elements :
(A) Dinitrogen is a diatomic gas which acts like an inert gas at room temperature.
(B) The common oxidation states of these elements are $-3,+3$ and +5 .
(C) Nitrogen has unique ability to form …

Given below are two statements : One is labelled as Assertion A and the other is labelled as Reason R:

Assertion A : The stability order of +1 oxidation state of Ga , In and Tl is $\mathrm{Ga}<\mathrm{In}<\mathrm{Tl}$.

Reason R : The inert pair effect stabilizes the lower oxida …

Among the following halogens
${\mathrm{F}}_2,{\mathrm{Cl}}_2,{\mathrm{Br}}_2$ and ${\mathrm{I}}_2$
Which can undergo disproportionation reaction?

Given below are two statements : one is labelled as Assertion (A) : and the other is labelled as Reason (R).
Assertion (A) : Both rhombic and monoclinic sulphur exist as ${\mathrm{S}}_8$ while oxygen exists as ${\mathrm{O}}_2$.
Reason (R) : Oxygen forms …

On reaction of Lead Sulphide with dilute nitric acid which of the following is not formed?

Number of oxygen atoms present in chemical formula of fuming sulphuric acid is ____.

Element not showing variable oxidation state is :

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : Melting point of Boron ( 2453 K) is unusually high in group 13 elements.
Reason (R) : Solid Boron has very strong crystalline lattice.
In the light of the ab …