Question

A common example of ${\beta }^{-}$decay is $15P^{32}\to 16S^{32}+x+y$ Then $x$ and $y$ stands for

• A. electron and neutrino
• B. positron and neutrino
• C. electron and anti neutrino
• D. positron and antineutrino

Answer 1

Answer: (C)

A beta minus particle $\left({\beta }^{-}\right)$s an electron.
Emission of ${\beta }^{-}$involves transformation of a neutron into a proton, an electron and a third particle called an antineutrino $(\bar{v})$
${}_{15}{P}^{32}\to {}_{16}{S}^{32}+{}_{-1}{\beta }^0+\bar{v}$