# QM: How does one calculate the probability in a Hydrogen atom in two different states?

## Homework Statement

In general, how would one calculate total probability/ in Hydrogen atom in two different states (n values)?

## Homework Equations

P(r) = dP/dr = r^2R(r)^2?

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## Answers and Replies

vela
Staff Emeritus
Science Advisor
Homework Helper
Education Advisor
That question doesn't even make sense. It's like asking, "How do you calculate the total probability of a pair of dice?"

You calculate the probability of events, e.g., the probability of rolling a 7.