Doubts
Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents
Sign in to save progress →
Doubts
Sign in

Structure of Atom question

2025 · 7 Apr · Shift 2 · Q18
Guest · try one question or challengeGuest · try one question or challenge
  1. PYQ Library
  2. /JEE Main
  3. /Chemistry
  4. /Structure of Atom
  5. /2025 · 7 Apr · Shift 2 · Q18

Structure of Atom question

2025 · 7 Apr · Shift 2 · Q18

JEE MainChemistryStructure of AtomMCQ+4 / −1
The extra stability of half-filled subshell is due to : (A) Symmetrical distribution of electrons (B) Smaller coulombic repulsion energy (C) The presence of electrons with the same spin in non-degenerate orbitals (D) Larger exchange energy (E) Relatively smaller shielding of electrons by one another Indentify the correct statements :
  1. A
    (B), (D) and (E) only
  2. B
    (A),(B),(D)(A),(B),(D)(A),(B),(D) and (E) only
  3. C
    (B), (C) and (D) only
  4. D
    (A),(B)(A),(B)(A),(B) and (D) only
PreviousNext

More from Structure of Atom

  • The energy of an electron in the first Bohr orbit of the H-atom is -13.6 eV. The magnitude of energy value of an electron in the first excited state of Be3+ is ​ eV (nearest integer value).2025 · Numerical
  • Correct statements for an element with atomic number 9 are: A. There can be 5 electrons for which ms​=+21​ and 4 electrons for which ms​=−21​. B. There is only one electron in pz​ orbital. C. The last electron…2025 · MCQ
  • Radius of the first excited state of Helium ion is given as : a0​→ radius of first stationary state of hydrogen atom.2025 · MCQ
  • Given below are two statements : Statement (I) : A spectral line will be observed for a 2px​→2py​ transition. Statement (II) : 2px​ and 2py​ are degenerate orbitals. In the light of the above…2025 · MCQ
  • Heat treatment of muscular pain involves radiation of wavelength of about 900 nm . Which spectral line of H atom is suitable for this? Given : Rydberg constant RH​=105 cm−1, h=6.6×10−34 J s,c=3×108 m/s)…2025 · MCQ
  • Given below are two statements : Statement (I) : For a given shell, the total number of allowed orbitals is given by n2. Statement (II) : For any subshell, the spatial orientation of the orbitals is given by −l to +l values…2025 · MCQ
  • Given below are two statements about X-ray spectra of elements : Statement (I) : A plot of v​(v= frequency of X-rays emitted) vs atomic mass is a straight line. Statement (II) : A plot of v(u= frequency of X-rays emitted) vs…2025 · MCQ
  • For hydrogen atom, the orbital/s with lowest energy is/are : (A) 4s(B) 3px​(C) 3 dx2−y2​(D) 3 dz2​(E) 4pz​ Choose the correct answer from the options given below :2025 · MCQ