What is the half-life of an isotope that decays to 6.25% of its original activity in 70.1 hours?

In an energy pyramid, which level has the most available energy?

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

In pqr m< p=60 m< q= 30 and m