Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NEET2006PhysicsNuclear PhysicsActual

₉₂²³⁸ U has 92 protons and 238 nucleons. It decays by emitting an alpha particle and becomes

Options

  1. A₉₂²³⁴ U
  2. B₉₀²³⁴ Th
  3. C235 U
  4. D₉₃²³⁷ ~Np .

Correct answer

B. ₉₀²³⁴ Th

Step-by-step solution

Emission of alpha particle, decrease the mass number by 4 and charge number by 2 . Decrease in mass number =238-4=234 Decrease in charge number =92-2=90 ₉₀²³⁴ Th is emitted.

Practice Nuclear Physics on Quantrex Academy →

More from Nuclear Physics

Consider the following nuclear fission reaction ₀^1 n + ₉₂²³⁵U _Z^A Y + ₄₁⁹⁹Nb + neutrons . If 4 neutrons are released during the fission process, then A and Z are 2026Two spherical nuclei have mass numbers 216 and 64 with their radii R₁ and R₂ respectively. The ratio R₁ R₂ is 2026At time t = 0 , the activity of a radioactive substance is 1600 Bq. At t= 8 s, the activity remains 100 Bq. The activity at t = 2 s, the is 2026A radioactive nucleus ₉₂X²³⁵ decays to ₉₁Y²³¹ . Which of the following particles are emitted? 2026In a given reaction, ^ A _ Z X ^ A _ Z+1 Y ^ A-4 _ Z-1 K ^ A-4 _ Z-1 K the radioactive radiations are emitted in the sequence of 2026When a nucleus in an atom undergoes a radioactive decay, the atomic number and/or mass number of the atom 2026A common example of ^- decay is ₁₅ P ³² ₁₆ S ³² + x + y Then x and y , respectively, stand for 2026For a radioactive nucleus that undergoes ^+ decay, which of the following CANNOT occur? 2026 Full Nuclear Physics list All NEET PYQs