Question

The correct order of the ionic radii of ${\mathrm{O}}^{2-},{\mathrm{N}}^{3-},{\mathrm{F}}^{-},{\mathrm{Mg}}^{2+},{\mathrm{Na}}^{+}$ and ${\mathrm{Al}}^{3+}$ is :
 

JEE Main 2020 (05 Sep Shift 2)

Options

• A: ${\mathrm{N}}^{3-}<{\mathrm{O}}^{2-}<{\mathrm{F}}^{-}<{\mathrm{Na}}^{+}<{\mathrm{Mg}}^{2*}<{\mathrm{AI}}^{3+}$
• B: ${\mathrm{AI}}^{3+}<{\mathrm{Na}}^{+}<{\mathrm{Mg}}^{2+}<{\mathrm{O}}^{2-}<{\mathrm{F}}^{-}<{\mathrm{N}}^{3-}$
• C: ${\mathrm{Al}}^{3+}<{\mathrm{Mg}}^{2+}<{\mathrm{Na}}^{+}<{\mathrm{F}}^{-}<{\mathrm{O}}^{2-}<{\mathrm{N}}^{3-}$
• D: ${\mathrm{N}}^{3-}<{\mathrm{F}}^{-}<{\mathrm{O}}^{2-}<{\mathrm{Mg}}^{2+}<{\mathrm{Na}}^{+}<{\mathrm{AI}}^{3+}$
   

Question

$\mathrm{B}$ has a smaller first ionization enthalpy than $\mathrm{B}\mathrm{e}$. Consider the following statement:
(I) it is easier to remove $2\mathrm{p}$ electron than$2\mathrm{s}$  electron
(II) $2\mathrm{p}$ electron of $\mathrm{B}$ is more shielded from the nucleus by the inner core of electrons than the $2\mathrm{s}$ electrons of $\mathrm{B}\mathrm{e}$
(III) $2\mathrm{s}$ electron has more penetration power than $2\mathrm{p}$ electron
(IV) atomic radius of $\mathrm{B}$ is more than $\mathrm{B}\mathrm{e}$
(atomic number $\mathrm{B}:5, \mathrm{B}\mathrm{e}=4$ )
The correct statements are.

JEE Main 2020 (09 Jan Shift 1)

Options

• A: (I), (II) and (IV)
• B: (II), (III) and (IV)
• C: (I), (II) and (III)
• D: (I), (III) and (IV)

Question

The set in which compounds have different nature is:

JEE Main 2021 (20 Jul Shift 1)

Options

• A: $\mathrm{B}(\mathrm{OH}{)}_3$ and ${\mathrm{H}}_3{\mathrm{PO}}_3$
• B: $\mathrm{B}(\mathrm{OH}{)}_3$ and $\mathrm{Al}(\mathrm{OH}{)}_3$
• C: $\mathrm{NaOH}$ and $\mathrm{Ca}(\mathrm{OH}{)}_2$
• D: $\mathrm{Be}(\mathrm{OH}{)}_2$ and $\mathrm{Al}(\mathrm{OH}{)}_3$

Question

The ionic radii of ${\mathrm{F}}^{-}$ and ${\mathrm{O}}^{2-}$ respectively are $1.33$ $\mathrm{A}$ and $1.4\mathrm{A}$, while the covalent radius of $\mathrm{N}$ is $0.74\mathrm{A}$ 

The correct statement for the ionic radius of ${\mathrm{N}}^{3-}$ from the following is :

JEE Main 2021 (25 Jul Shift 2)

Options

• A: It is smaller than ${\mathrm{F}}^{-}$ and $\mathrm{N}$
• B: It is bigger than ${\mathrm{O}}^{2-}$ and ${\mathrm{F}}^{-}$
• C: It is bigger than ${\mathrm{F}}^{-}$ and $\mathrm{N}$, but smaller than of ${\mathrm{O}}^{2-}$
• D: It is smaller than ${\mathrm{O}}^{2-}$ and ${\mathrm{F}}^{-}$, but bigger than of
  $\mathrm{N}$

Question

Match List-$\mathrm{I}$ with List-$\mathrm{II}$.

Choose the most appropriate answer from the options given below:

JEE Main 2021 (26 Feb Shift 1)

Options

• A: $\left(\mathrm{a}\right)\to \left(\mathrm{q}\right),\left(\mathrm{b}\right)\to \left(\mathrm{r}\right),\left(\mathrm{c}\right)\to \left(\mathrm{s}\right),\left(\mathrm{d}\right)\to \left(\mathrm{p}\right)$
• B: $\left(\mathrm{a}\right)\to \left(\mathrm{p}\right),\left(\mathrm{b}\right)\to \left(\mathrm{r}\right),\left(\mathrm{c}\right)\to \left(\mathrm{s}\right),\left(\mathrm{d}\right)\to \left(\mathrm{q}\right)$
• C: $\left(\mathrm{a}\right)\to \left(\mathrm{p}\right),\left(\mathrm{b}\right)\to \left(\mathrm{s}\right),\left(\mathrm{c}\right)\to \left(\mathrm{r}\right),\left(\mathrm{d}\right)\to \left(\mathrm{q}\right)$
• D: $\left(\mathrm{a}\right)\to \left(\mathrm{s}\right),\left(\mathrm{b}\right)\to \left(\mathrm{p}\right),\left(\mathrm{c}\right)\to \left(\mathrm{q}\right),\left(\mathrm{d}\right)\to \left(\mathrm{r}\right)$

Question

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : Metallic character decreases and non-metallic character increases on moving from left to right in a period.
Reason (R): It is due to increase in ionisation enthalpy and decrease in electron gain enthalpy, when one moves from left to right in a period.
In the light of the above statements, choose the most appropriate answer from the options given below :

JEE Main 2021 (31 Aug Shift 1)

Options

• A: (A) is false but $\left(\mathrm{R}\right)$ is true.
• B: Both $\left(\mathrm{A}\right)$ and $\left(\mathrm{R}\right)$ are correct and $\left(\mathrm{R}\right)$ is the correct explanation of $\left(\mathrm{A}\right)$
• C: Both $\left(\mathrm{A}\right)$ and $\left(\mathrm{R}\right)$ are correct but $\left(\mathrm{R}\right)$ is not the correct explanation of $\left(\mathrm{A}\right)$.
• D: $\left(\mathrm{A}\right)$ is true but $\left(\mathrm{R}\right)$ is false.

Question

What is the correct oder of electron gain enthalpy of $\mathrm{Cl}, \mathrm{F}, \mathrm{Te}, \mathrm{Po}$

JEE Main 2022 (25 Jun Shift 2)

Options

• A: $\mathrm{F}>\mathrm{Cl}>\mathrm{Te}>\mathrm{Po}$
• B: $\mathrm{Cl}>\mathrm{F}>\mathrm{Te} >\mathrm{Po}$
• C: $\mathrm{Te}>\mathrm{Po}>\mathrm{Cl}>\mathrm{F}$
• D: $\mathrm{Po}>\mathrm{Te}>\mathrm{F}>\mathrm{Cl}$

Question

Element "$\mathrm{E}$" belongs to the period $4$ and group $16$ of the periodic table. The valence shell electron configuration of the element, which is just above "$\mathrm{E}$" in the group is

JEE Main 2022 (28 Jun Shift 1)

Options

• A: $2{\mathrm{s}}^{2}2{\mathrm{p}}^4$
• B: $3{\mathrm{d}}^{10},4{\mathrm{s}}^2,4{\mathrm{p}}^4$
• C: $3{\mathrm{s}}^{2}3{\mathrm{p}}^4$
• D: $4{\mathrm{d}}^{10},5{\mathrm{s}}^2,5{\mathrm{p}}^4$

Question

The first ionization enthalpy of $\mathrm{Na},\mathrm{Mg}$ and $\mathrm{Si}$, respectively, are: $496,737$ and $786 \mathrm{kJ}{\mathrm{mo}1}^{-1}$. The first ionization enthalpy $\left({\mathrm{kJmol}}^{-1}\right)$ of $\mathrm{Al}$ is

JEE Main 2022 (29 Jul Shift 1)

Options

• A: $487$
• B: $768$
• C: $577$
• D: $856$

Question

Match List-I with List-II

Choose the correct answer from the options given below

JEE Main 2022 (28 Jun Shift 2)

Options

• A: $\left(\mathrm{A}\right)-\left(\mathrm{IV}\right),\left(\mathrm{B}\right)-\left(\mathrm{III}\right),\left(\mathrm{C}\right)-\left(\mathrm{I}\right),\left(\mathrm{D}\right)-\left(\mathrm{II}\right)$
• B: $\left(\mathrm{A}\right)-\left(\mathrm{IV}\right),\left(\mathrm{B}\right)-\left(\mathrm{II}\right),\left(\mathrm{C}\right)-\left(\mathrm{I}\right),\left(\mathrm{D}\right)-\left(\mathrm{III}\right)$
• C: $\left(\mathrm{A}\right)-\left(\mathrm{II}\right),\left(\mathrm{B}\right)-\left(\mathrm{IV}\right),\left(\mathrm{C}\right)-\left(\mathrm{III}\right),\left(\mathrm{D}\right)-\left(\mathrm{I}\right)$
• D: $\left(\mathrm{A}\right)-\left(\mathrm{I}\right),\left(\mathrm{B}\right)-\left(\mathrm{II}\right),\left(\mathrm{C}\right)-\left(\mathrm{III}\right),\left(\mathrm{D}\right)-\left(\mathrm{IV}\right)$

Question

For electron gain enthalpies of the elements denoted as ${\Delta }_{\mathrm{eg}}\mathrm{H}$, the incorrect option is :

JEE Main 2023 (01 Feb Shift 2)

Options

• A: ${\Delta }_{\mathrm{eg}}\mathrm{H}\left(\mathrm{Cl}\right)<{\Delta }_{\mathrm{eg}}\mathrm{H}\left(\mathrm{F}\right)$
• B: ${\Delta }_{\mathrm{eg}}\mathrm{H}\left(\mathrm{Se}\right)<{\Delta }_{\mathrm{eg}}\mathrm{H}\left(\mathrm{S}\right)$
• C: ${\Delta }_{\mathrm{eg}}\mathrm{H}\left(\mathrm{I}\right)<{\Delta }_{\mathrm{eg}}\mathrm{H}\left(\mathrm{At}\right)$
• D: ${\Delta }_{\mathrm{eg}}\mathrm{H}\left(\mathrm{Te}\right)<{\Delta }_{\mathrm{eg}}\mathrm{H}\left(\mathrm{Po}\right)$

Question

For compound having the formula ${\mathrm{GaAlCl}}_4$, the correct option from the following is

JEE Main 2023 (11 Apr Shift 1)

Options

• A: Ga is coordinated with CI in ${\mathrm{GaAlCl}}_4$
• B: Ga is more electronegative than AI and is present as a cationic part of the salt ${\mathrm{GaAlCl}}_4$
• C: CI forms bond with both AI and Ga in ${\mathrm{GaAlCl}}_4$
• D: Oxidation state of Ga in the salt ${\mathrm{GaAlCl}}_4 \text{is} +3$

Question

. Identify the correct order of standard enthalpy of formation of sodium halides.

JEE Main 2023 (13 Apr Shift 2)

Options

• A: $\mathrm{NaI} < \mathrm{NaBr} < \mathrm{NaF} < \mathrm{NaCl}$
• B: $\mathrm{NaI} < \mathrm{NaBr} < \mathrm{NaCl} < \mathrm{NaF}$
• C: $\mathrm{NaF} < \mathrm{NaCl} < \mathrm{NaBr} < \mathrm{NaI}$
• D: $\mathrm{NaCl} < \mathrm{NaF} < \mathrm{NaBr} < \mathrm{NaI}$

Question

Bond dissociation energy of $\mathrm{E}-\mathrm{H}$ bond of the "${\mathrm{H}}_2\mathrm{E}$" hydrides of group $16$ elements (given below), follows order.
(A) $\mathrm{O}$
(B) $\mathrm{S}$
(C) $\mathrm{Se}$
(D) $\mathrm{Te}$

JEE Main 2023 (30 Jan Shift 2)

Options

• A: $\mathrm{A}>\mathrm{B}>\mathrm{C}>\mathrm{D}$
• B: $\mathrm{A}>\mathrm{B}>\mathrm{D}>\mathrm{C}$
• C: $\mathrm{B}>\mathrm{A}>\mathrm{C}>\mathrm{D}$
• D: $\mathrm{D}>\mathrm{C}>\mathrm{B}>\mathrm{A}$

Question

The correct order of first ionization enthalpy values of the following elements is : (A) \(\mathrm{O}\) (B) \(\mathrm{N}\) (C) \(\mathrm{Be}\) (D) \(\mathrm{F}\) (E) \(\mathrm{B}\) Choose the correct answer from the options given below :

JEE Main 2024 (04 Apr Shift 1)

Options

• A: E \( < \) C \( < \) A \( < \) B \( < \) D
• B: C \( < \) E \( < \) A \( < \) B \( < \) D
• C: B \( < \) D \( < \) C \( < \) E \( < \) A
• D: A \( < \) B \( < \) D \( < \) C \( < \) E

Question

The correct order of the first ionization enthalpy is

JEE Main 2024 (04 Apr Shift 2)

Options

• A: \(\mathrm{Al} > \mathrm{Ga} > \mathrm{Tl}\)
• B: \(\mathrm{Ga} > \mathrm{Al} > \mathrm{B}\)
• C: \(\mathrm{Tl} > \mathrm{Ga} > \mathrm{Al}\)
• D: \(\mathrm{B} > \mathrm{Al} > \mathrm{Ga}\)

Question

Match List I with List II \(\begin{array}{|l|l|c|l|} \hline & \text{List - I} & & \text{List - II} \\ \hline & \text{(Elements)} & & \text{(Properties in their respective groups)} \\ \hline \text { A. } & \mathrm{Cl}, \mathrm{S} & \text { I. } & \text { Elements with highest electronegativity } \\ \hline \text { B. } & \mathrm{Ge}, \mathrm{As} & \text { II. } & \text { Elements with largest atomic size } \\ \hline \text { C. } & \text { Fr, Ra } & \text { III. } & \begin{array}{l} \text { Elements which show properties of both } \\ \text { metals and non-metal } \end{array} \\ \hline \text { D. } & \text { F, O } & \text { IV. } & \begin{array}{l} \text { Elements with highest negative electron } \\ \text { gain enthalpy } \end{array} \\ \hline \end{array}\) Choose the correct answer from the options given below:

JEE Main 2024 (08 Apr Shift 1)

Options

• A: A-II, B-I, C-IV, D-III
• B: A-III, B-II, C-I, D-IV
• C: A-IV, B-III, C-II, D-I
• D: A-II, B-III, C-IV, D-I

Question

Match List I with List II \(\begin{array}{|l|l|c|l|} \hline & \text{ List - I } & & \text{List - II} \\ \hline \text { A. } & \text { Melting Point }[\mathrm{K}] & \text { I. } & \mathrm{T} 1>\mathrm{In}>\mathrm{Ga}>\mathrm{A} 1>\mathrm{B} \\ \hline \text { B. } & \text { Ionic Radius }\left[\mathrm{M}^{+3} / \mathrm{pm}\right] & \text { II. } & \mathrm{B}>\mathrm{T} 1>\mathrm{A} 1 \approx \mathrm{Ga}>\mathrm{In} \\ \hline \text { C. } & \Delta_{\mathrm{i}} \mathrm{H}_1\left[\mathrm{~kJ} \mathrm{~mol}^{-1}\right] & \text { III. } & \mathrm{T} 1>\mathrm{In}>\mathrm{A} 1>\mathrm{Ga}>\mathrm{B} \\ \hline \text { D. } & \text { Atomic Radius }[\mathrm{pm}] & \text { IV. } & \mathrm{B}>\mathrm{A} 1>\mathrm{T} 1>\mathrm{In}>\mathrm{Ga} \\ \hline \end{array}\) Choose the correct answer from the options given below:

JEE Main 2024 (09 Apr Shift 2)

Options

• A: A-II, B-III, C-IV, D-I
• B: A-IV, B-I, C-II, D-III
• C: A-I, B-II, C-III, D-IV
• D: A-III, B-IV, C-I, D-II

Question

The element having the highest first ionization enthalpy is

JEE Main 2024 (29 Jan Shift 2)

Options

• A: $\mathrm{Si}$
• B: $\mathrm{Al}$
• C: $\mathrm{N}$
• D: $\mathrm{C}$

Question

Given below are two statements:
Statement - I: Along the period, the chemical reactivity of the element gradually increases from group $1$ to group $18$ .
Statement - II: The nature of oxides formed by group $1$ element is basic while that of group $17$ elements is acidic.
In the the light above statements, choose the most appropriate from the questions given below:

JEE Main 2024 (30 Jan Shift 2)

Options

• A: Both statement I and Statement II are true.
• B: Statement I is true but Statement II is False.
• C: Statement I is false but Statement II is true.
• D: Both Statement I and Statement II is false.

Question

The correct sequence of electron gain enthalpy of the elements listed below is

A. Ar  B. Br  C. F  D. S

Choose the most appropriate from the options given below:

JEE Main 2024 (31 Jan Shift 1)

Options

• A: C > B > D > A
• B: A > D > B > C
• C: A > D > C > B
• D: D > C > B > A

Question

Consider the following elements.

Which of the following is/are true about ${\mathrm{A}}^{\text{'}}, {\mathrm{B}}^{\text{'}}, {\mathrm{C}}^{\text{'}}$ and ${\mathrm{D}}^{\text{'}}$ ?

A. Order of atomic radii: ${\mathrm{B}}^{\text{'}}<{\mathrm{A}}^{\text{'}}<{\mathrm{D}}^{\text{'}}<{\mathrm{C}}^{\text{'}}$

B. Order of metallic character : ${\mathrm{B}}^{\text{'}}<{\mathrm{A}}^{\text{'}}<{\mathrm{D}}^{\text{'}}<{\mathrm{C}}^{\text{'}}$

C. Size of the element : ${\mathrm{D}}^{\text{'}}<{\mathrm{C}}^{\text{'}}<{\mathrm{B}}^{\text{'}}<{\mathrm{A}}^{\text{'}}$

D. Order of ionic radii : ${{\mathrm{B}}^{\text{'}}}^{+}<{{\mathrm{A}}^{\text{'}}}^{+}<{{\mathrm{D}}^{\text{'}}}^{+}<{{\mathrm{C}}^{\text{'}}}^{+}$

Choose the correct answer from the options given below:

JEE Main 2024 (31 Jan Shift 2)

Options

• A: A only
• B: A, B and D only
• C: A and B only
• D: B, C and D only

Question

Given below are two statements :
Statement (I) : Both metal and non-metal exist in $\mathrm{p}$ and d-block elements.
Statement (II) : Non-metals have higher ionisation enthalpy and higher electronegativity than the metals.
In the light of the above statements, choose the most appropriate answer from the option given below:

JEE Main 2024 (01 Feb Shift 2)

Options

• A: Both Statement I and Statement II are false
• B: Statement I is false but Statement II is true
• C: Statement I is true but Statement II is false
• D: Both Statement I and Statement II are true