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Question
(a) Write the basic nuclear process involved in the emission of β+ in a symbolic form, by a radioactive nucleus.
(b) In the reactions given below:
(i)`""_16^11C->_y^zB+x+v`
(ii)`""_6^12C+_6^12C->_a^20 Ne + _b^c He`
Find the values of x, y, and z and a, b and c.
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Solution
(a)
The basic nuclear process involved in the emission of β+ in a symbolic form, by a radioactive nucleus
p →n + β++ v
For a beta-plus decay, a proton transforms into a neutron within the nucleus, according to the above reaction.
(b)
(i)
`""_6^11C->_y^zB+x+v`
`=>""_6^11C->_5^11B+_1^0beta+100`
The corresponding y and z are 5 and 11, respectively. The x is the positron
(ii)
`""_6^12C+_6^12C->_a^20 Ne +_b^c He`
⇒
`""_6^12C+_6^12C->_10^20Ne+_2^4He`
The corresponding values of a, b and c are 10, 2 and 4, respectively.
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