Sections
Key Equations

Key Equations

 energy of hydrogen electron in an orbital $En=−13.6eVn2(n=1,2,3,...)En=−13.6eVn2(n=1,2,3,...)$ energy of any hydrogen-like electron in orbital $En=Z2n2Eo(n=1,2,3,...)En=Z2n2Eo(n=1,2,3,...)$ wavelength of light emitted by an electron changing states $1λ=R(1nf2−1ni2)1λ=R(1nf2−1ni2)$ wavelength of an orbital $nλn=2πrn(n=1,2,3,...)nλn=2πrn(n=1,2,3,...)$ heisenberg’s uncertainty principle $ΔxΔp≥h4πΔxΔp≥h4π$
 alpha decay equation $XZAN→YZ−2A−4N+H24eXZAN→YZ−2A−4N+H24e$ beta decay equation $XZAN→YZ+1AN−1+e+vXZAN→YZ+1AN−1+e+v$ gamma decay equation $XZAN→XN+γXZAN→XN+γ$
 radioactive half-life $N=NOe−λtN=NOe−λt$
 energy–mass conversion $E=mc2E=mc2$ proton-proton chain
 roentgen equivalent man $rem=rad×RBErem=rad×RBE$