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Retro (Past 13 Years) IIT - JEE Advanced (Structure Of Atom) - JEE MCQ


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11 Questions MCQ Test - Retro (Past 13 Years) IIT - JEE Advanced (Structure Of Atom)

Retro (Past 13 Years) IIT - JEE Advanced (Structure Of Atom) for JEE 2024 is part of JEE preparation. The Retro (Past 13 Years) IIT - JEE Advanced (Structure Of Atom) questions and answers have been prepared according to the JEE exam syllabus.The Retro (Past 13 Years) IIT - JEE Advanced (Structure Of Atom) MCQs are made for JEE 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Retro (Past 13 Years) IIT - JEE Advanced (Structure Of Atom) below.
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Retro (Past 13 Years) IIT - JEE Advanced (Structure Of Atom) - Question 1
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Retro IIT-JEE Advanced  (Compilation of Last 10 Years  Questions)

IIT JEE (Main & Advanced) past year questions with solutions & answer key

Retro IIT JEE (Main and Advanced) have questions from previous/past (10 to 13 years) papers of IIT JEE (Main and Advanced) with solutions,

The following set of questions contain previous/past (10 to 13 years) questions of IIT JEE (Main and Advanced) of Chapter "Structure of Atom" with solutions 

Q. In an atom, the total number of electrons having quantum numbers n = 4,| ml | = 1 and ms = - 1/2 is

(2014 Adv., Integer Type)


Detailed Solution for Retro (Past 13 Years) IIT - JEE Advanced (Structure Of Atom) - Question 1

|ml| = 1thus, magnetic quantum number = + 1 and -1 

n = 4 can have suborbits

Thus underlined electrons with (m, = - 1, + 1) and spin - (1/2) are six.

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Retro (Past 13 Years) IIT - JEE Advanced (Structure Of Atom) - Question 2
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The atomic masses of He and Ne are 4 and 20 amu, respectively. The value of the de-Broglie wavelength of He gas at -73°C is "M" times that of the de-Broglie wavelength of Ne at 727°C. M is

(2013 Adv., Integer Type)


Detailed Solution for Retro (Past 13 Years) IIT - JEE Advanced (Structure Of Atom) - Question 2




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Retro (Past 13 Years) IIT - JEE Advanced (Structure Of Atom) - Question 3
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The kinetic energy of an electron in the second Bohr orbit of a hydrogen atom is [a0 is Bohr radius]

(2012, Single Option Correct Type)

Detailed Solution for Retro (Past 13 Years) IIT - JEE Advanced (Structure Of Atom) - Question 3

According to Bohr's model 


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Retro (Past 13 Years) IIT - JEE Advanced (Structure Of Atom) - Question 4
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The maximum number of electrons that can have principal quantum number, n = 3 and spin quantum number, ms = - 1 / 2 , is

(2011, Integer Type)

Detailed Solution for Retro (Past 13 Years) IIT - JEE Advanced (Structure Of Atom) - Question 4

When n = 3, l = 0,1,2, i.e. there are 3s, 3p and 3d orbitals. If all these orbitals are completely occupied as


Total 18 electrons, 9 electrons with s =  and 9 with s = 
Alternatively
In any nth orbit, there can be a maximum of 2n2 electrons. Hence, when n = 3, number of maximum electrons = 18. Out of these 18 electrons, 9 can have spin =   and remaining nine with spin = 

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Retro (Past 13 Years) IIT - JEE Advanced (Structure Of Atom) - Question 5
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The work function of some metals is listed below. The number of metals which will show photoelectric effect when light of 300 nm wavelength falls on the metal is 

(2011, integer Type)

Detailed Solution for Retro (Past 13 Years) IIT - JEE Advanced (Structure Of Atom) - Question 5


For photoelectric effect to occur, energy of incident photons must be greater than work function of metal. Hence, only Li, Na, K and Mg have work functions less than 4.14V.

Retro (Past 13 Years) IIT - JEE Advanced (Structure Of Atom) - Question 6
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Direction (Q. Nos. 6-8) This section contains a paragraph, wach describing  theory, experiments, data etc. three Questions related to paragraph have been  given.Each question have only one correct answer among the four given  ptions  (a),(b),(c),(d)

The hydrogen-like species Li2+ is in a spherically symmetric state S1, with one radial node. Upon absorbing light the ion undergoes transition to a state S2. The state S2 has one radial node and its energy is equal to the ground state energy of the hydrogen atom.

 

Q. The stateS1 is
Detailed Solution for Retro (Past 13 Years) IIT - JEE Advanced (Structure Of Atom) - Question 6

S1 is spherically symmetrical state, i.e. it corre spo nd to a s-orbital. Also it has one radial node.
Number of radial nodes = n - I - I
n - 0 - 1 = 1
n = 2, i.e. S1 = 2s orbital.

Retro (Past 13 Years) IIT - JEE Advanced (Structure Of Atom) - Question 7
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The hydrogen-like species Li2+ is in a spherically symmetric state S1, with one radial node. Upon absorbing light the ion undergoes transition to a state S2. The state S2 has one radial node and its energy is equal to the ground state energy of the hydrogen atom.

 

Q. Energy of the state S1 in units of the hydrogen atom ground state energy is 
Detailed Solution for Retro (Past 13 Years) IIT - JEE Advanced (Structure Of Atom) - Question 7

Ground state energy of electron in H-atom (EH)

Retro (Past 13 Years) IIT - JEE Advanced (Structure Of Atom) - Question 8
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The hydrogen-like species Li2+ is in a spherically symmetric state S1, with one radial node. Upon absorbing light the ion undergoes transition to a state S2. The state S2 has one radial node and its energy is equal to the ground state energy of the hydrogen atom.

 

Q. The orbtial angular momentum quantum number of the state S2 is
Detailed Solution for Retro (Past 13 Years) IIT - JEE Advanced (Structure Of Atom) - Question 8


Retro (Past 13 Years) IIT - JEE Advanced (Structure Of Atom) - Question 9
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Match the entries in Column I with the correctly related quantum number(s) in Column II.
Detailed Solution for Retro (Past 13 Years) IIT - JEE Advanced (Structure Of Atom) - Question 9


(ii) To describe a one electron wave function, three quantum numbers n, I and m are needed. Further to abide by Pauli exclusion principle, spin quantum number (s) is also needed,

(iii) For shape, size and orientation, only n, I and m are needed.

(iv) Probability density  can be determined if n, I and m are known

Retro (Past 13 Years) IIT - JEE Advanced (Structure Of Atom) - Question 10
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According to Bohr’s theory
En = Total energy, Kn = Kinetic energy
Vn = Potential energy, rn = Radius of nth orbit

Match the following 
Detailed Solution for Retro (Past 13 Years) IIT - JEE Advanced (Structure Of Atom) - Question 10



Retro (Past 13 Years) IIT - JEE Advanced (Structure Of Atom) - Question 11
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The number of radial nodes in 3s and 2p respectively are

(2005, Single Option Correct Type)
Detailed Solution for Retro (Past 13 Years) IIT - JEE Advanced (Structure Of Atom) - Question 11

The number of radial nodes is given by expression (n - l - 1). 

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