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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