Rank the following electron transitions in a hydrogen atom from lowest energy to

Question

Rank the following electron transitions in a hydrogen atom from lowest energy to highest energy:

n = 5 to n = 2, n = 4 to n = 2, n = 6 to n = 2, n = 3 to n = 2

A. n = 6 to n = 2 < n = 5 ton = 2 < n = 4 to n = 2 < n = 3 to n = 2

B. n = 3 to n = 2 < n = 4 to n = 2 < n = 5 to n = 2 < n = 6 to n = 2

C. n = 5 to n = 2 < n = 4 to n = 2 < n = 6 to n = 2 < n = 3 to n = 2

D. n = 5 to n = 2 < n = 6 to n = 2 < n = 4 to n = 2 <n = 3 to n = 2

E. n = 6 to n = 2 < n = 4 to n = 2 < n = 5 to n = 2 < n = 3 to n = 2

Explanation / Answer

Apply Rydberg Formula

E = R*(1/nf^2 – 1/ni ^2)

R = -2.178*10^-18 J

Nf = final stage/level

Ni = initial stage/level

E = Energy per unit (i.e. J/photon)

Therefore, the larger difference, the mroe enrgetic

if n = 2 is the last level

then,

n6 > n5 > n4 > n3

since the higher the energy, the more it releases

from th elist

choose B

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