Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NEET2015ChemistryStructure of AtomActual

In an atom, an electron is moving with a speed of 600 ~m / s with an accuracy of 0.005 % . Certainty with which the position of the electron can be located is (Given, h=6.6 10⁻³⁴ ~kg ~m ^2 ~s ⁻¹ , mass of electron e_m=9.1 10⁻³¹ ~kg )

Options

  1. A2.15 10⁻³ ~m
  2. B2.78 10⁻³ ~m
  3. C1.92 10⁻³ ~m
  4. D3.24 10⁻³ ~m

Correct answer

C. 1.92 10⁻³ ~m

Step-by-step solution

Given that velocity of electron, v=600 ~m / s Accuracy of velocity =0.005 % v= 600 0.005 100 =0.03 According to Heisenberg's uncertainty principle x . m v h 4 Or, aligned x & = 6.6 10⁻³⁴ 4 3.14 9.1 10⁻³¹ 0.03 & =1.92 10⁻³ ~m aligned

Practice Structure of Atom on Quantrex Academy →

More from Structure of Atom

Identify the pair of atoms of elements as isotones from the following. 2026Which of the following elements has an electronic configuration, [ Ar ] 4s^2 ? 2026Calculate the energy per mole of photons of red light with a wavelength 750 nm. [ h = 6.626 10⁻³⁴ Js, C = 3 10^8 m/s.] 2026Calculate the energy associated with an electron in the first orbit of hydrogen atom? 2026Find the wave number of the 4^ th line in the Lyman series of H spectrum. (R = Rydberg constant) 2026Calculate the de-Broglie wavelength of an electron having velocity 1000 ms ⁻¹ [ h = 6.626 10⁻³⁴ js , mass of an electron = 9.1 10⁻³¹ kg ] 2026How many total number of s and p electrons are respectively present in Cl ^- ? 2026Visible light has a wavelength of 700 nm. Calculate its frequency in hertz. 2026 Full Structure of Atom list All NEET PYQs