The isotope A₂₈1 decays by beta-minus decay. What is the daughter nucleus?

Question

Quizplus · Accepted Answer

In beta-minus decay, a neutron in the nucleus is converted into a proton, an electron (beta particle), and an antineutrino. The atomic number increases by 1, but the mass number remains the same. Therefore, the daughter nucleus of A₂₈1 (which is a stylized way of saying "As-128") would be Si-128, as silicon (Si) has one more proton than arsenic (As).

The Isotope A281 Decays by Beta-Minus Decay

The Isotope A₂₈1 Decays by Beta-Minus Decay