Alpha decay
Tested in 2 real MPSC questions across 1 year (2023–2023). See it in context on the interactive Concept Graph →
Years it was asked
What you need to know first
Real questions that test this
जेव्हा α-कण किरणोत्सारी घटकातून बाहेर पडतात तेव्हा When α-particle emits from a radioactive element then
a)अणुअंक 2 ने कमी होतो आणि अणुवस्तुमानांक 4 ने कमी होतो / atomic number decreases by 2 and mass number decreases by 4✓ Correct
b)अणुअंक 1 ने कमी होतो आणि अणुवस्तुमानांक 2 ने कमी होतो / atomic number decreases by 1 and mass number decreases by 2
c)अणुअंक 1 ने वाढतो / atomic number increases by 1
d)अणुअंक आणि अणुवस्तुमानांक बदलत नाही / atomic number and mass number remains same
An alpha particle is a helium nucleus (He-4,2). When emitted from a radioactive nucleus, the mass number decreases by 4 and the atomic number decreases by 2.