1
JEE Main 2023 (Online) 31st January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The correct increasing order of the ionic radii is

A
$$\mathrm{Cl^- < Ca^{2+} < K^+ < S^{2-}}$$
B
$$\mathrm{K^+ < S^{2-} < Ca^{2+} < Cl^-}$$
C
$$\mathrm{Ca^{2+} < K^+ < Cl^- < S^{2-}}$$
D
$$\mathrm{S^{2-} < Cl^- < Ca^{2+} < K^+}$$
2
JEE Main 2023 (Online) 30th January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
Bond dissociation energy of "E-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. Se

D. $\mathrm{Te}$

Choose the correct from the options given below:
A
$\mathrm{A}>\mathrm{B}>\mathrm{C}>\mathrm{D}$
B
$\mathrm{D}>\mathrm{C}>\mathrm{B}>\mathrm{A}$
C
$\mathrm{B}>\mathrm{A}>\mathrm{C}>\mathrm{D}$
D
$\mathrm{A}>\mathrm{B}>\mathrm{D}>\mathrm{C}$
3
JEE Main 2023 (Online) 30th January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Match List I with List II

List I
(Atomic number)
List II
(Block of periodic table)
A. 37 I. p-block
B. 78 II. d-block
C. 52 III. f-block
D. 65 IV. s-block

Choose the correct answer from the options given below :

A
A - II, B - IV, C - I, D - III
B
A - IV, B - III, C - II, D - I
C
A - IV, B - II, C - I, D - III
D
A - I, B - III, C - IV, D - II
4
JEE Main 2023 (Online) 29th January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Given below are two statements :

Statement I : The decrease in first ionization enthalpy from B to Al is much larger than that from Al to Ga.

Statement II : The d orbitals in Ga are completely filled.

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

A
Statement I is correct but statement II is incorrect
B
Statement I is incorrect but statement II is correct
C
Both the statements I and II are correct
D
Both the statements I and II are incorrect
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