In the beta decay :
→ 
+ e –
Text Solution
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CHECK THE SOLUTION.
(a, b, c)
In beta decay neutron decays to proton
→ p + + e – spin of p
+ , e – & 
is 
Therefore spin (R.H.S.) is either 0 or 1
spin (L.H.S.) in 
spin (R.H.S.) ≠ spin (L.H.S.)
Hence spin angular momentum is not conserved.
Total energy, mass number and charge is conserved as can be seen by equation.
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