The energy level diagram for hydrogen
The smallest energy of an absorbed photon that will raise a hydrogen atom from its ground state to its first excited state is
a.
1.5 eV.
b.
1.9 eV.
c.
3.4 eV.
d.
10.2 eV.
e.
13.6 eV.
d
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A. Moon rocks should have some similar, and some different compositional characteristics. B. Moon rocks should have a composition that is the same as Earth's crust. C. Moon rocks should have the same composition as rocks found on Earth. D. Moon rocks should have a completely different composition than rocks found on Earth.
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A) 1-10% B) 50-100% C) 30-40% D) 10-20% E) 100-200%
In a given period, the element of Group ______________ has the lowest ionization energy
Fill in the blank(s) with correct word
What is the wavelength of a photon emitted when an electron in hydrogen goes from the n = 4 state to the n = 1 state?
A. 323 nm B. 156 nm C. 121 nm D. 103 nm E. 97.3 nm