Question

QUESTION 6 223 223 The atom 8 Fr decays to 8 Ra by emitting what kind of nuclear radiation? beta-plus alpha beta-minus gamma X-rays.

Answer 1

$\beta -$ (beta minus) is the decay of a neutron into a proton, which keeps the total mass the same, but increases the number of protons by 1.

$Fr_{87}^{223}\textrm{} = Ra_{88}^{223}\textrm{} + e_{-1}^{0}\textrm{}$