Calculate the energy change in joules, that occurs when an electron is raised from the n=3 to the n=5?

Question

energy level of a hydrogen atom

a) 0.872
b) -1.55
c) 1.55 x 10(-19)
d) 2.42
e) 2.42 x 10(-19)

Answer 1

The electron energies in hydrogen are

En = - 13.6 ev / n^2

Compute E3 and E5 and take the difference. The result is in electron-Volts. There are 1.602 x 10-19 J / ev.

Answer 2

the energy is calculated by the formula
E=E(0)*(1/(3)^2-1/(5)^2) = E(0) * (1/9-1/25) = E(0)*(16/225)
E(0) =0.077eV = 0.077*1.6*10^-19=1.55*10^-19J

Answer correct : c

Answer 3

Use this formulation: q=mc^T Q=potential M=mass in grams C=particular warmth ^T=temperature substitute in celsius next, you place your values into the calculation Q(unknown)=(10grams)(10 tiers)(4.184j/c mol) Q=418.4 joules