A nucleus of uranium decays at rest into nuclei of thorium and helium. Then :

An unstable heavy nucleus at rest breaks in to two nuclei which move away with velocities are in the ration f 8: 27 The ratio of the radii of the nuclei (assumed to be spherical) is :

Assertion:An alpha -particle is emitted when uranium 238 decays into thorium Reason : The decay of uranium 238 to thorium is repesented by ._92^238 U to ._90^234Th + ._2^4 He . The helium nuclei is called an alpha particle.

_________ occurs in nature as a decay product of thorium and uranium minerals .

In beta -decay, the nuclei emit

A uranium nucleus U-238 of atomic number 92 emits two alpha - particles and two beta -particles and trasnforms into a thorium nucleus. What is the mass number and atomic number of the thorium nucleus so produced?

A uranium nucleus U-238 of atomic number 92 emits two alpha - particles and two beta -particles and trasnforms into a thorium nucleus. What is the mass number and atomic number of the thorium nucleus so produced?

A nucleus "_92U^235 undergoes alpha decay and transformeers into thorium. What is the mass number and charge number of nucleus produced?

A nucleus ._92U^(235) undergoes alpha decay and transforms into thorium. What is mass number and charge number of nucleus produced?