Can an element decay "backward" in the periodic table, to a lower atomic number?
A) No, in fact elements cannot alter their atomic number by radioactive decay.
B) No, but an element can decay to a higher atomic number.
C) Yes, by alpha decay.
D) Yes, by beta decay.
E) Yes, radioactive decay always causes elements to decay to a lower atomic number.

Question

Quizplus · Accepted Answer

Alpha decay results in the emission of an alpha particle (2 protons and 2 neutrons), which decreases the atomic number by 2, effectively moving the element "backward" in the periodic table.

Can an Element Decay "Backward" in the Periodic Table, to a Lower