Approximately what percentage of Rb-87 will have decayed to Sr-87 when the rock is 3 billion years old? After 0.02 half-
lives
After 0.04 half-
lives
After 0.06 half-
lives
After 0.08 half-
lives
percent of Rb-87
remaining
98.623
97.265
95.926
94.606

step-by-step explanation:

whole numbers, zero or greater

if two electrons have the same n, the same ℓ, and the same ml, then they are in the same orbital. the pauli exclusion principle states that no two identical fermions (a fancy word for electrons and other subatomic particles like electrons) may occupy the same quantum state in an atom simultaneously.