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The radioactive decay of uranium into th...

The radioactive decay of uranium into thorium is represented by the equation:
`._(92)^(238)Urarr._(90)^(234)Th+x`
What is x ?

A

An electon

B

A proton

C

An alpha particle

D

A neutron

Text Solution

Verified by Experts

The correct Answer is:
C
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In the nuclear reaction ._(90)^(234)Th rarr ._(91)^(234)Pa + X . X 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.

Determine the number of protons and neutrons in ""_(92)U^(238) and ""_(90)Th^(234) .

Consider the following nuclear decay: ""_(92)^(236)Uto""_(90)^(232)Th+X What is X?

Stationery nucleus .^(238)U decays by a emission generaring a total kinetic energy T: ._(92)^(238) rarr ._(90)^(234)Th +._2^4 alpha What is the kinetic energy of the alpha -particle?

The half life period of uranium is 4.5 billion years. After 9.0 billion years, the number of moles of heliumm liberated from the following nuclear reaction will be: ._(92)^(238)U to ._(90)^(234)Th + ._(2)^(4)He Initially there was I mole uranium.

Calculate the amount of energy released during the alpha -decay of ._(92)^(238)Urarr_(90)^(234)Th+._(2)^(4)He Given: atomic mass of ._(92)^(238)U=238.05079 u , atomic mass of ._(90)^(234)Th=234.04363 u , atomic mass ._(2)^(4)He=4.00260u , 1u=931.5 MeV//c^(2) . Is this decay spontaneous?Give reason.

PHYSICS GALAXY - ASHISH ARORA-NUCLEAR PHYSICS AND RADIOACTIVITY-Concptual MCQs
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