Home
Class 11
CHEMISTRY
When electron enters into the orbital of...

When electron enters into the orbital of equal energy subshells, they are arranged in such a way that the direction of their spins remain parallel or the value of spin quantum number remains maximum. This statement is known as…

A

Hund’s rule

B

Heisenberg’s principle

C

Pauli’s Exclusion principle

D

Auf-bau rule

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • STRUCTURE OF ATOM

    KUMAR PRAKASHAN|Exercise SECTION -D (MULTIPLE CHOICE QUESTIONS)|55 Videos

  • STRUCTURE OF ATOM

    KUMAR PRAKASHAN|Exercise QUESTINS PAPER FROM MODULE (SECTION -A)|6 Videos

  • STRUCTURE OF ATOM

    KUMAR PRAKASHAN|Exercise Section -C (MCQs asked in Jee NEET AIEEE )|58 Videos

  • STATES OF MATTER

    KUMAR PRAKASHAN|Exercise QUESTION PAPER FROM MODULE (SECTION - A)|4 Videos

  • THE P-BLOCK ELEMENTS

    KUMAR PRAKASHAN|Exercise SECTION-D NCERT EXEMPLAR SOLUTION (MCQs) LONG ANSWER|25 Videos

Similar Questions

Explore conceptually related problems

No two electrons in an atom will have all four quantum numbers equal. The statement is known as

How many maximum number of electrons in 3p orbital have spin quantum number s= +(1)/(2) ?

Two metallic plate A and B , each of area 5 xx 10^(-4)m^(2) , are placed parallel to each at a separation of 1 cm plate B carries a positive charge of 33.7 xx 10^(-12) C A monocharonatic beam of light , with photoes of energy 5 eV each , starts falling on plate A at t = 0 so that 10^(16) photons fall on it per square meter per second. Assume that one photoelectron is emitted for every 10^(6) incident photons fall on it per square meter per second. Also assume that all the emitted photoelectrons are collected by plate B and the work function of plate A remain constant at the value 2 eV Determine (a) the number of photoelectrons emitted up to i = 10s, (b) the magnitude of the electron field between the plate A and B at i = 10 s, and (c ) the kinetic energy of the most energotic photoelectrons emitted at i = 10 s whenit reaches plate B Negilect the time taken by the photoelectrons to reach plate B Take epsilon_(0) = 8.85 xx 10^(-12)C^(2)N- m^(2)

The maximum number of electrons that can have principal quantum number, n = 3, and spin quantum number m_(s) = - 1 /2, is

An experimental setup of verification of photoelectric effect is shown in the diagram. The voltage across the electrode is measured with the help of an ideal voltmetar, and which can be varied by moving jockey 'J' on the potentiometer wire. The battery used in potentiometer circuit is of 20 V and its internal resistance is 2omega . The resistance of 100 cm long potentiometer wire is 8 omega . The photo current is measured with the help of an ideal ammeter. Two plates of potassium oxide of area 50 cm^(2) at separation 0.5 mm are used in the vacuum tube. Photo current in the circuit is very small so we can treat potentiometer circuit an indepdent circuit. The wavelength of various colours is as follows : |{:("Light",underset("Violet")(1),underset("Blue")(2),underset("Green")(3),underset("Yellow")(4),underset("Orange")(5),underset("Red")(6)),(lambda "in" Årarr,4000-4500,4500-5000,5000-5500,5500-6000,6000-6500,6500-7000):}| When other light falls on the anode plate the ammeter reading remains zero till, jockey till, jockey is moved from the end P to the middle point on the wire PQ. Thereafter the deflection is recorded in the ammeter. The maximum kinetic energy of the emitted electron is :

When cathode C of photocell is incident with photon of 5 eV energy ,maximum KE of electron emitted is 2 eV.For which value of stopping potential on anode (A) photo incident with energy of 6 eV,number of electron reaching to anode will become zero?

KUMAR PRAKASHAN-STRUCTURE OF ATOM-Section -C(MCQ asked in Board Exam )
  1. Two electrons of K-shell can be distinguished by

    Text Solution

    |

  2. In an atom an electron is moving with a speed of 600 ms^(-1) with an a...

    Text Solution

    |

  3. The splitting of the spectral lines under the influence of magnetic fi...

    Text Solution

    |

  4. Bohr’s atomic model could explain the spectrum o f ............

    Text Solution

    |

  5. How many electrons in an atom with atomic number 50 can have (n + l) =...

    Text Solution

    |

  6. Which of the following set of quantum numbers of an electron will have...

    Text Solution

    |

  7. The associate wavelength of a particle with mass 1 gram and velocity 1...

    Text Solution

    |

  8. When electron enters into the orbital of equal energy subshells, they ...

    Text Solution

    |

  9. Assertion : The relative proportion of atoms of THtium and Protium is ...

    Text Solution

    |

  10. If kinetic energy of an electron is increased by nine times, the wavel...

    Text Solution

    |

  11. The correct set of four quantum number for the unpaired electron of th...

    Text Solution

    |

  12. What is frequency of first line of Balmer series for H-atom ?

    Text Solution

    |

  13. Number of unpaired electron(s) present in an element having atom ic nu...

    Text Solution

    |

  14. Number of total electrons in an orbit of - angular M omentum Quantum N...

    Text Solution

    |

  15. Number of electrons present in P^(-3) ion having 15 protons a r e .......

    Text Solution

    |

  16. Which of the following electronic configuration is not possible

    Text Solution

    |

  17. What is shape of theorbital having I = I and m = 0 ?

    Text Solution

    |

  18. Electronic configuration of an elem ent of the m odern periodic table ...

    Text Solution

    |

  19. Which of the following series of lines in atomic spectrum of hydrogen ...

    Text Solution

    |

  20. The energy of one mole of photon having frequency 4 xx 10^(14) Hz is

    Text Solution

    |