JEE Main 2025 (Online) 22nd January Morning Shift | Periodic Table & Periodicity Question 28 | Chemistry

1

JEE Main 2025 (Online) 22nd January Morning Shift

MCQ (Single Correct Answer)

+4

-1

Which of the following electronegativity order is incorrect?

A

$\mathrm{S}<\mathrm{Cl}<\mathrm{O}<\mathrm{F}$

B

$\mathrm{Al}<\mathrm{Si}<\mathrm{C}<\mathrm{N}$

C

$\mathrm{Al}<\mathrm{Mg}<\mathrm{B}<\mathrm{N}$

D

$\mathrm{Mg}<\mathrm{Be}<\mathrm{B}<\mathrm{N}$

2

JEE Main 2024 (Online) 9th April Evening Shift

MCQ (Single Correct Answer)

+4

-1

Match List I with List II

	LIST I (Element)		LIST II (Electronic Configuration)
A.	$$\mathrm{N}$$	I.	$$[\mathrm{Ar}] 3 \mathrm{~d}^{10} 4 \mathrm{~s}^2 4 \mathrm{p}^5$$
B.	$$\mathrm{S}$$	II.	$$[\mathrm{Ne}] 3 \mathrm{~s}^2 3 \mathrm{p}^4$$
C.	$$\mathrm{Br}$$	III.	$$[\mathrm{He}] 2 \mathrm{~s}^2 2 \mathrm{p}^3$$
D.	$$\mathrm{Kr}$$	IV.	$$[\mathrm{Ar}] 3 \mathrm{~d}^{10} 4 \mathrm{~s}^2 4 \mathrm{p}^6$$

Choose the correct answer from the options given below:

A

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

B

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

C

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

D

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

3

JEE Main 2024 (Online) 9th April Evening Shift

MCQ (Single Correct Answer)

+4

-1

Match List I with List II

	LIST I		LIST II
A.	Melting Point $$[\mathrm{K}]$$	I.	$$\mathrm{T} 1>\mathrm{In}>\mathrm{Ga}>\mathrm{A} 1>\mathrm{B}$$
B.	Ionic Radius $$[\mathrm{M}^{+3} / \mathrm{pm}]$$	II.	$$\mathrm{B}>\mathrm{T} 1>\mathrm{Al} \approx \mathrm{Ga}>\mathrm{In}$$
C.	$$\Delta_{\mathrm{i}} \mathrm{H}_1[\mathrm{~kJ} \mathrm{~mol}^{-1}]$$	III.	$$\mathrm{T} 1>\mathrm{In}>\mathrm{Al}>\mathrm{Ga}>\mathrm{B}$$
D.	Atomic Radius [pm]	IV.	$$\mathrm{B}>\mathrm{A} 1>\mathrm{T} 1>\mathrm{In}>\mathrm{Ga}$$

Choose the correct answer from the options given below:

A

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

B

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

C

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

D

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

4

JEE Main 2024 (Online) 9th April Morning Shift

MCQ (Single Correct Answer)

+4

-1

Given below are two statements :

Statement (I) : The oxidation state of an element in a particular compound is the charge acquired by its atom on the basis of electron gain enthalpy consideration from other atoms in the molecule.

Statement (II) : $$\mathrm{p} \pi-\mathrm{p} \pi$$ bond formation is more prevalent in second period elements over other periods.

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

Both Statement I and Statement II are correct

C

Statement I is incorrect but Statement II is correct

D

Both Statement I and Statement II are incorrect