Each part of this question asks you about your knowledge of the hydrogen atom sp

Question

Each part of this question asks you about your knowledge of the hydrogen atom spectrum.

Eatom = -2.178 x10-18 J * (1/nf2 - 1/ni2)

Part 1:

Choose the electron transition that has the largest energy.

A) n = 4 n= 1

B) n = 3 n= 2

C) n = 4 n= 3

D) n = 4 n= 2

E) n = 3 n= 1

F) n = 2 n= 1

Part 2:

Choose the electron transition that will emit the photon with the longest wavelength.

A) n = 3 n= 2

B) n = 4 n= 3

C) n = 4 n= 1

D) n = 4 n= 2

E) n = 3 n= 1

F) n = 2 n= 1

Part 3:

Choose the electron transition that produces light in the visible portion of the electromagnetic spectrum.

A) n = 3 n= 1

B) n = 4 n= 2

C) n = 2 n= 1

D) n = 4 n= 1

E) n = 4 n= 3

Explanation / Answer

1)

largest energy is produced when energy difference between the levels are largest

which will be n=4—>n=1

Answer: A

2)

longest wavelength will be emitted when energy difference between the levels are least

energy difference will be least between n=4—>n=3

Answer: B

3)

final level, n=2 produces light in visible region

All emission where final level is n=2 are also known as Balmer series

Answer: B

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