Classification of Elements and Periodicity — JEE Main PYQs

Which of the following represents the correct trend for the mentioned property?
A. $\mathrm{F}>\mathrm{P}>\mathrm{S}>\mathrm{B}$ - First Ionization Energy
B. $\mathrm{Cl}>\mathrm{F}>\mathrm{S}>\mathrm{P}$ - Electron Affinity
C. …

Given below are two statements:

Statement-I: The correct order in terms of atomic/ionic radii is $\mathrm{Al}>\mathrm{Mg}>{\mathrm{Mg}}^{2+}>{\mathrm{Al}}^{3+}$.

Statement-II: The correct order in terms of the magnitude of electron gain enthalpy is …

Given below are two statements :

Statement-I : The first ionization enthalpy of Cr is lower than that of Mn.
Statement-II : The second and third ionization enthalpies of Cr are higher than those of Mn .

In the light of the above statements, choose the correct answer from the op …

Given below are two statements :

Statement-I : $\mathrm{C}<\mathrm{O}<\mathrm{N}<\mathrm{F}$ is the correct order in terms of first ionization enthalpy values.

Statement-II : $\mathrm{S}>\mathrm{Se}>\mathrm{Te}>\mathrm{Po}>\mathrm{O}$ is the correct order in terms of the ma …

The correct trend in the first ionization enthalpies of the elements in the $3^{\text{rd}}$ period of periodic table is:

The correct statements from the following are :
(A) Ionic radii of trivalent cations of group 13 elements decreases down the group.
(B) Electronegativity of group 13 elements decreases down the group.
(C) Among the group 13 elements, Boron has highest first ionisation enthalpy.
( …

Elements X and Y belong to Group 15. The difference between the electronegativity values of 'X' and phosphorus is higher than that of the difference between phosphorus and 'Y'. 'X' & 'Y' are respectively

Given below are two statements:

Statement I: The second ionisation enthalpy of Na is larger than the corresponding ionisation enthalpy of Mg.

Statement II: The ionic radius of ${\mathrm{O}}^{2-}$ is larger than that of ${\mathrm{F}}^{-}$.

In the light of the above statements, …

Given below are two statements :
Statement I: $\mathrm{K}>\mathrm{Mg}>\mathrm{Al}>\mathrm{B}$ is the correct order in terms of metallic character.
Statement II : Atomic radius is always greater than the ionic radius for any element.
In the light of the above statements, choose th …

The correct order of $\mathrm{C},\mathrm{N},\mathrm{O}$ and F in terms of second ionisation potential is

In period 4 of the periodic table, the elements with highest and lowest atomic radii are respectively.

Consider the elements $\mathrm{N},\mathrm{P},\mathrm{O},\mathrm{S},\mathrm{Cl}$ and F . The number of valence electrons present in the elements with most and least metallic character from the above list is respectively.

Given below are two statements :

Statement (I): The first ionisation enthalpy of the elements $\mathrm{Na},\mathrm{Mg},\mathrm{Cl}$ and Ar follows the order
$\mathrm{Na}>\mathrm{Mg}>\mathrm{Cl}>\mathrm{Ar}$
Statement (II) : Among $\mathrm{Ca},\mathrm{Al},\mathrm{Fe}$ and B, …

A monoatomic anion $(\mathrm{A}{}^{-})$ has 45 neutrons and 36 electrons. Atomic mass, group in the periodic table and physical state at room temperature of the element (A) respectively are:

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 answ …

The 1st ionization enthalpy for Mg is +737 kJ/mol. The most probable estimated value of the 2nd ionization enthalpy of Mg is

Statement I : The correct order of electronegativity of fluorine, oxygen nitrogen is $\mathrm{F}>\mathrm{O}>\mathrm{N}$.
Statement II : The oxidation state of oxygen in ${\mathrm{OF}}_2$ is +2 and in ${\mathrm{Na}}_2\mathrm{O}$ is -2 .
In the light of the above statements, …

Given below are two statements :

Statement-I : The number of pairs among …

First and second ionization enthalpies of lithium are $520\mathrm{kJ}{\mathrm{mol}}^{-1}$ and $7297\mathrm{kJ}{\mathrm{mol}}^{-1}$ respectively. Energy required to convert 3.5 mg lithium (g) into ${\mathrm{Li}}^{2+}(\mathrm{g})$ …

In a period, the first ionisation enthalpy of the element at extreme left and the negative electron gain enthalpy of the extreme right element, except noble gases, are respectively.

The correct order of first $({\Delta }_{\mathrm{i}}{\mathrm{H}}_1)$ and second $({\Delta }_{\mathrm{i}}{\mathrm{H}}_2)$ ionisation enthalpy values of cr and Mn are :
A. ${\Delta }_{\mathrm{i}}{\mathrm{H}}_1:\mathrm{Cr}>\mathrm{Mn}$
B. …

Match List-I with List-II.

List-I
Electronic configuration of neutral atom
(where $\mathbf{n}=2$)

A. ${\mathrm{ns}}^2$
B. ${\mathrm{ns}}^2{\mathrm{np}}^1$
C. ${\mathrm{ns}}^2{\mathrm{np}}^3$
D. ${\mathrm{ns}}^2{\mathrm{np}}^6$

List-II
First ionization enthalpy (kJ/mol)

I. 2 …

Which of the following electronegativity order is incorrect?

Given below are two statements :

Statement (I) : An element in the extreme left of the periodic table forms acidic oxides.

Statement (II) : Acid is formed during the reaction between water and oxide of a reactive element present in the extreme right of the periodic table.

In t …

Which of the following Statements are NOT true about the periodic table?
A. The properties of elements are function of atomic weights.
B. The properties of elements are function of atomic numbers.
C. Elements having similar outer electronic configuration are arranged in same peri …

Given below are two statements :

Statement (I) : The first ionization energy of Pb is greater than that of Sn

Statement(II) : The first ionization energy of Ge is greater than that of Si .

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

The successive 5 ionisation energies of an element are 800 , 2427, 3658, 25024 and $32824\mathrm{kJ}/\mathrm{mol}$, respectively. By using the above values predict the group in which the above element is present :

The element that does not belong to the same period of the remaining elements (modern periodic table) is:

The incorrect decreasing order of atomic radii is :

Given below are two statements :

Statement (I): According to the Law of Octaves, the elements were arranged in the increasing order of their atomic number.

Statement (II) : Meyer observed a periodically repeated pattern upon plotting physical properties of certain elements agai …

An element 'E' has the ionisation enthalpy value of $374\mathrm{kJ}{\mathrm{mol}}^{-1}$. 'E' reacts with elements A, B, C and D with electron gain enthalpy values of $-328,-349$, -325 and $-295\mathrm{kJ}{\mathrm{mol}}^{-1}$, respectively.
The correct order of the produ …

Given below are two statements:

Statement (I): The radii of isoelectronic species increases in the order.
${\mathrm{Mg}}^{2+}<{\mathrm{Na}}^{+}<{\mathrm{F}}^{-}<{\mathrm{O}}^{2-}$
Statement (II): The magnitude of electron gain enthalpy of halogen decreases in the order. …

Given below are two statements :

Statement (I) : The metallic radius of Al is less than that of Ga.
Statement (II) : The ionic radius of ${\mathrm{Al}}^{3+}$ is less than that of ${\mathrm{Ga}}^{3+}$.
In the light of the above statements, choose the most appropriate answer from the …

Electronic configuration of four elements A, B, C and D are given below :
(A) $1{\mathrm{s}}^{2}2{\mathrm{s}}^{2}2{\mathrm{p}}^3$
(B) $1s^{2}2s^{2}2p^4$
(C) $1s^{2}2s^{2}2p^5$
(D) $1s^{2}2s^{2}2p^2$

Which of the following is the correct order of increasin …

Which of the following statements are correct?
A. The process of the addition an electron to a neutral gaseous atom is always exothermic
B. The process of removing an electron from an isolated gaseous atom is always endothermic
C. The $1^{\text{st }}$ ionization energy of the bo …

Given below are two statements:

Statement (I): The first ionisation enthalpy of group 14 elements is higher than the corresponding elements of group 13.
Statement (II): Melting points and boiling points of group 13 elements are in general much higher than those the corresponding …

The elements of Group 13 with highest and lowest first ionisation enthalpies are respectively:

Choose the incorrect trend in the atomic radii (r) of the elements :

The atomic number of the element from the following with lowest $1^{\text{st }}$ ionisation enthalpy is:

The correct order of first ionization enthalpy values of the following elements is :
(A) O
(B) N
(C) Be
(D) F
(E) B

Choose the correct answer from the options given below :

The correct order of the first ionization enthalpy is

Given below are two statements:

Statement I: The correct order of first ionization enthalpy values of Li, Na, F and Cl is Na<Li<Cl<F.

Statement II : The correct order of negative electron gain enthalpy values of Li, Na, F and Cl is Na<Li<F<Cl

In the light of the above statemen …

The statement(s) that are correct about the species ${\mathrm{O}}^{2-},{\mathrm{F}}^{-},{\mathrm{Na}}^{+}$and ${\mathrm{Mg}}^{2+}$.
(A) All are isoelectronic
(B) All have the same nuclear charge
(C) ${\mathrm{O}}^{2-}$ has the largest ionic radii
(D) ${\mathrm{Mg}}^{2+}$ has the sm …

Given below are two statements :

Statement I : The metallic radius of Na is $1.86{\mathrm{A}}^{\circ }$ and the ionic radius of ${\mathrm{Na}}^{+}$is lesser than $1.86{\mathrm{A}}^{\circ }$.

Statement II : Ions are always smaller in size than the corresponding elements.

In t …

The electron affinity value are negative for :
A. $\mathrm{Be}\to {\mathrm{Be}}^{-}$
B. $\mathrm{N}\to {\mathrm{N}}^{-}$
C. $\mathrm{O}\to {\mathrm{O}}^{2-}$
D. $\mathrm{Na}\to {\mathrm{Na}}^{-}$
E. $\mathrm{Al}\to {\mathrm{Al}}^{-}$ …

Identify the correct statements about p-block elements and their compounds.
(A) Non metals have higher electronegativity than metals.
(B) Non metals have lower ionisation enthalpy than metals.
(C) Compounds formed between highly reactive nonmetals and highly reactive metals are g …

Given below are two statements :

Statement (I) : The 4f and 5f - series of elements are placed separately in the Periodic table to preserve the principle of classification.
Statement (II) :S-block elements can be found in pure form in nature. In the light of the above statements …

Given below are two statements :

Statement (I) : Both metal and non-metal exist in 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 appropriat …

In case of isoelectronic species the size of ${\mathrm{F}}^{-}$, Ne and ${\mathrm{Na}}^{+}$ is affected by: