A plot of the number of neutrons (n) against the number of protons (p) of stable nuclei exhibits upward deviation from linearity for atomic number, Z> 20. For an unstable nucleus having n/p ratio less than 1, the possible mode(s) of decay is (are)
A
β− - decay (β - emmision)
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
orbital of K - electron capture
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
neutron emission
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
β+ - decay (positron emission)
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
Open in App
Solution
The correct options are B orbital of K - electron capture Dβ+ - decay (positron emission)
For elements, z> 20, Generally Neutrons (n) > Protons (p) ⇒np>1⇒ upward deviation In question, np<1⇒ Lesser neutrons Now, β−−emission⇒10n→0−1e+11H K- electron capture ⇒11p+0−1e→10n Newton emission β+−emission⇒11P→10n++1e