A radioactive nucleus AZX undergoes spontaneous decay in the sequence AZX→(Z−1)B→(Z−3)C→(Z−2)D, where Z is the atomic number of element X. The possible decay particles in the sequence are:
Held on 30 Apr 2021 · Verified 9 Jul 2026.
α,β−,β+
α,β+,β−
β+,α,β−
β−,α,β+
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De-Broglie wavelength of an electron orbiting in the $n=2$ state of hydrogen atom is close to (Given Bohr radius $=0.052 \mathrm{~nm}$ )
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