Quiz 2
Introduction to Chemistry. Astrochemistry
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What are orbitals?
Choose a statement which is consistent with the Pauli exclusion principle:
Choose a statement which is consistent with the Hund’s rule:
Which attractive force is responsible for the ionic bond?
Which attractive force is responsible for bonding in liquids?
What is the bond strength?
If an oxygen atom has 4 atomic orbitals available for bonding, how many total molecular orbitals can be expected for the O₂ molecule?
What is anti-bonding?
In a bonding situation for a diatomic molecule, where would one expect to find most of the electron density?
Why is it difficult to detect H₂, O₂, N₂ molecules in the IR?
The first interstellar molecules were detected through their
What is the main constituent of diffuse and dense clouds?
Why do radio telescopes usually have a much larger diameter than optical telescopes?
The astrochemical processes fall into the following classes:
What are the roles of a grain surface in chemical reactions? (choose the wrong answer)
Why is H³⁺considered the cornerstone molecule for interstellar chemistry, and not H²⁺?
Which transitions of diatomic molecules are (almost) equally spaced?
Why does interstellar chemistry rapidly change at temperatures around 100K?
Why is CO not always a good tracer for H₂? (choose the wrong answer)
Which are the two most abundant molecules in dense molecular clouds (fractional abundance relative to H₂)?
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