Elements in the same group have the same number of outer-shell electrons or "valence" electrons, so they tend to react similarly, as they can form similar bonds.
Increases the concentration of hydronium ions in an aqueous solution
1/4 Ao = Ao * ( 1/2)^(t/106)
t = 212
subtract 4.6 billion years
<span>d)</span>
Answer:
that the second one surely represent the beta particle
Is it an atomic model? I'm not really sure
