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1
JEE Main 2024 (Online) 31st January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The four quantum numbers for the electron in the outer most orbital of potassium (atomic no. 19) are

A
$$\mathrm{n}=3, l=0, \mathrm{~m}=1, \mathrm{~s}=+\frac{1}{2}$$
B
$$\mathrm{n}=4, l=0, \mathrm{~m}=0, s=+\frac{1}{2}$$
C
$$\mathrm{n}=2, l=0, \mathrm{~m}=0, s=+\frac{1}{2}$$
D
$$\mathrm{n}=4, l=2, \mathrm{~m}=-1, s=+\frac{1}{2}$$
2
JEE Main 2024 (Online) 30th January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Given below are two statements :

Statement (I) : The orbitals having same energy are called as degenerate orbitals.

Statement (II) : In hydrogen atom, 3p and 3d orbitals are not degenerate orbitals.

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

A
Statement I is true but Statement II is false
B
Statement I is false but Statement II is true
C
Both Statement I and Statement II are false
D
Both Statement I and Statement II are true
3
JEE Main 2024 (Online) 29th January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Match List I with List II

List - I
(Spectral Series for Hydrogen)		 List - II
(Spectral Region/Higher Energy State)
(A) Lyman (I) Infrared region
(B) Balmer (II) UV region
(C) Paschen (III) Infrared region
(D) Pfund (IV) Visible region

Choose the correct answer from the options given below:

A
A-II, B-IV, C-III, D-I
B
A-I, B-III, C-II, D-IV
C
A-II, B-III, C-I, D-IV
D
A-I, B-II, C-III, D-IV
4
JEE Main 2024 (Online) 29th January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The correct set of four quantum numbers for the valence electron of rubidium atom $$(\mathrm{Z}=37)$$ is :

A
$$5,1,1,+\frac{1}{2}$$
B
$$5,0,0,+\frac{1}{2}$$
C
$$5,0,1,+\frac{1}{2}$$
D
$$5,1,0,+\frac{1}{2}$$
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