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

2022 · 29 Jul · Shift 1 · Q17
Guest · try one question or challengeGuest · try one question or challenge
  1. PYQ Library
  2. /JEE Main
  3. /Chemistry
  4. /Structure of Atom
  5. /2022 · 29 Jul · Shift 1 · Q17

Structure of Atom question

2022 · 29 Jul · Shift 1 · Q17

JEE MainChemistryStructure of AtomNumerical+4 / −1
The minimum uncertainty in the speed of an electron in an one dimensional region of length 2ao2 \mathrm{a}_{\mathrm{o}}2ao​(Where ao=\mathrm{a}_{\mathrm{o}}=ao​= Bohr radius 52.9 pm52.9 \,\mathrm{pm}52.9pm) is ‾km s−1\underline{\hspace{2cm}}\mathrm{km} \,\mathrm{s}^{-1}​kms−1. (Given : Mass of electron = 9.1 ×\times× 10 −-− 31 kg, Planck's constant h = 6.63 ×\times× 10 −-− 34 Js)
Numerical answer
PreviousNext

More from Structure of Atom

  • Given below are the quantum numbers for 4 electrons. A. n=3,l=2, m1​=1, ms​=+1/2 B. n=4,l=1, m1​=0, ms​=+1/2 C. n=4,l=2, m1​=−2, ms​=−1/2…2022 · MCQ
  • Which of the following statements are correct? (A) The electronic configuration of Cr is [Ar] 3d5 4s1. (B) The magnetic quantum number may have a negative value. (C) In the ground state of an atom, the orbitals are filled in order of their…2022 · MCQ
  • Which of the following is the correct plot for the probability density ψ2 (r) as a function of distance 'r' of the electron from the nucleus for 2s orbital?2022 · MCQ
  • The number of radial nodes and total number of nodes in 4p orbital respectively are :2022 · MCQ
  • A 50 watt bulb emits monochromatic red light of wavelength of 795 nm. The number of photons emitted per second by the bulb is x × 1020. The value of x is ​. [Given : h = 6.63 × 10 − 34 Js and c =…2021 · Numerical
  • When light of wavelength 248 nm falls on a metal of threshold energy 3.0 eV, the de-Broglie wavelength of emitted electrons is ​Ao​. (Round off to the Nearest Integer). [ Use : 3​= 1.73, h =…2021 · Numerical
  • The number of orbitals with n = 5, m1 = +2 is ​. (Round off to the Nearest Integer).2021 · Numerical
  • A certain orbital has n = 4 and mL = − 3. The number of radial nodes in this orbital is ​. (Round off to the Nearest Integer).2021 · Numerical