Energy Levels: The Bohr model of the hydrogen atom predicts an ionization energy of 13.6 eV. Using this model, what would we expect for the ionization energy of the Li++ ion, which has 3 protons?
A. 122 eV
B. 40.8 eV
C. 54.4 eV
D. 27.2 eV
E. 79.6 eV
Answer: A
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A form of physical weathering in which sheets of rock flake away due to seasonal temperature changes or by the expansion of the rock due to unloading is ?
What will be an ideal response?
How do we account for the great variety of substances in the world?
A) The Earth is 4.5 billion years old.
B) Most of these substances are organic compounds.
C) Atoms are incredibly small.
D) There are many possible combinations of atoms.
__________ in an x-ray spectrum of an atom occur because electrons in the atom make transitions to lower energy levels after being bombarded with high energy electrons
Fill in the blank(s) with correct word
A person who normally weighs 700 N is riding in a rather swift elevator that is moving at a constant speed of 9.8 m/s. If this person is standing on a bathroom scale inside the elevator, what would the scale read?
A) more than 700 N B) less than 700 N C) 700 N D) It could be more or less than 700 N, depending on whether the elevator is going up or down.