1. The problem statement, all variables and given/known data Calculate the centripetal acceleration of an electron in the lowest Bohr orbit. 2. Relevant equations no equations were given but i think i have to use ac = v2/r were v = 2.19 x 106 m/s (speed of electron in its lowest orbit) r = ao = 5.29 x 10-11m (minimum radius) 3. The attempt at a solution so (2.19 x 106m/s)2/(5.29 x 10-11m) = 9.07x1022 m/s2 does this look correct?