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1
JEE Main 2020 (Online) 2nd September Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The number of subshells associated with n = 4 and m = –2 quantum numbers is
A
8
B
2
C
16
D
4
2
JEE Main 2020 (Online) 2nd September Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The figure that is not a direct manifestation of the quantum nature of atoms is :
A
JEE Main 2020 (Online) 2nd September Morning Slot Chemistry - Structure of Atom Question 133 English Option 1
B
JEE Main 2020 (Online) 2nd September Morning Slot Chemistry - Structure of Atom Question 133 English Option 2
C
JEE Main 2020 (Online) 2nd September Morning Slot Chemistry - Structure of Atom Question 133 English Option 3
D
JEE Main 2020 (Online) 2nd September Morning Slot Chemistry - Structure of Atom Question 133 English Option 4
3
JEE Main 2020 (Online) 9th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The de Broglie wavelength of an electron in the 4th Bohr orbit is :
A
2$$\pi $$a0
B
6$$\pi $$a0
C
8$$\pi $$a0
D
4$$\pi $$a0
4
JEE Main 2020 (Online) 8th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Hydrogen has three isotopes (A), (B) and (C). If the number of neutron(s) in (A), (B) and (C) respectively, are (x), (y) and (z), the sum of (x), (y) an (z) is :
A
3
B
1
C
4
D
2
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