A heavy neutral atom, such as iron, produces many spectral lines compared to light elements like hydrogen and helium. Why?
A) Because of the larger number of electrons and corresponding energy levels, more transitions are possible.
B) Because of the larger number of electrons, there are many ionization levels possible.
C) Because of the larger number protons, the amount of force holding the electrons to the atom can vary between different iron atoms.
D) Because of the atom's larger size, it will be hit by more photons in a beam of light.
A
You might also like to view...
The brilliant nuclei of Seyfert galaxies change brightness rapidly, in only a few hours or minutes, especially at _____
A) microwave wavelengths B) visible light wavelengths C) gamma ray wavelengths D) X-ray wavelengths
Heavy nuclei are unstable because
a. each nucleon is a separate particle that is not acted on by the nuclear force. b. there are not enough protons present relative to the number of neutrons for the electrical force to be strong enough. c. the nuclear force dominates the Coulomb repulsive force at distances less than 2 fm, but falls off rapidly at greater distances. d. nuclei are stable only when the number of neutrons equals the number of protons. e. nuclei are stable only when the number of protons exceeds the number of neutrons.
The language of science is
A) mathematics. B) Latin. C) Chinese. D) Arabic.
On average, how often do impactors about 10 km in size, large enough to produce mass extinction, hit Earth?
What will be an ideal response?