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

2024 · 30 Jan · Shift 2 · Q23
Guest · try one question or challengeGuest · try one question or challenge
  1. PYQ Library
  2. /JEE Main
  3. /Chemistry
  4. /Structure of Atom
  5. /2024 · 30 Jan · Shift 2 · Q23

Structure of Atom question

2024 · 30 Jan · Shift 2 · Q23

JEE MainChemistryStructure of AtomNumerical+4 / −1
Number of spectral lines obtained in He+\mathrm{He}^{+}He+ spectra, when an electron makes transition from fifth excited state to first excited state will be
Numerical answer
PreviousNext

More from Structure of Atom

  • The ionization energy of sodium in  kJ mol−1, if electromagnetic radiation of wavelength 242 nm is just sufficient to ionize sodium atom is ​.2024 · Numerical
  • The four quantum numbers for the electron in the outer most orbital of potassium (atomic no. 19) are2024 · MCQ
  • Electrons in a cathode ray tube have been emitted with a velocity of 1000 m s −1. The number of following statements which is/are true​ about the emitted radiation is ​. Given : h=6×10−34 J s,me​=9×10−31 kg…2023 · Numerical
  • Which one of the following sets of ions represents a collection of isoelectronic species? (Given : Atomic Number : F:9,Cl:17,Na=11,Mg=12,Al=13,K=19,Ca=20,Sc=21)2023 · MCQ
  • The wavelength of an electron of kinetic energy 4.50×10−29 J is ​×10−5 m. (Nearest integer) Given : mass of electron is 9×10−31 kg, h =6.6×10−34 J s2023 · Numerical
  • If the radius of the first orbit of hydrogen atom is α0​, then de Broglie's wavelength of electron in 3rd  orbit is :2023 · MCQ
  • The number of atomic orbitals from the following having 5 radial nodes is ​. 7s,7p,6s,8p,8d2023 · Numerical
  • Henry Moseley studied characteristic X-ray spectra of elements. The graph which represents his observation correctly is Given v= frequency of X-ray emitted Z = atomic number2023 · MCQ