Question

The Balmer lines are from a) The transition of hydrogen atoms into the lowest energy level...

The Balmer lines are from

a) The transition of hydrogen atoms into the lowest energy level

b) The transition of hydrogen atoms into the n=2 level.

c) The transition of helium atoms into the lowest energy level.

d) The transition of oxygen atoms to the lowest energy level.

Emission lines are caused when an electron moves ____ energy; Absorption lines are caused when an electron moves ______ energy

a) to higher; to lower

b) to a higher n; to a lower n

c) to lower energy; to higher energy

A hot atomic gas produces

a) Blackbody absorption.

b) Emission lines.

c) Blackbody emission.

d) Absorption lines.

Atoms of different elements have unique spectral lines because each element:

a) has a unique set of electron orbitals.

b) has unique photons.

c) has a unique set of neutrons.

d) has atoms of a unique color.

An atom has energy levels of E= -9, -5, -2, and -1. It has one electron in the -1 energy level. Which of the following photons can it emit?

a) A photon with E=2

b) A photon with E=4

c) A photon with E=5

d) A photon with E=10

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