What is a chemical bond?
The force of attraction holding atoms together in a compound.
What does the octet rule describe?
An atom's tendency to gain 8 electrons in its valence shell.
What electronegativity difference characterizes a non-polar covalent bond?
A small electronegativity difference.
What is the Lewis structure of hydrogen cyanide?
H–C≡N with a single H–C bond and a triple C≡N bond.
Chemical bond
Force of attraction holding atoms together.
Ionic bond
Electron transfer creates charged ions.
Octet rule
Atoms seek 8 electrons in valence shell.
Covalent bond
Atoms share electron pairs.
Molecular formula
Exact atom count in a compound.
Empirical formula
Simplest whole-number atom ratio.
Moles formula
n = m / M; mass over molar mass.
Answer 9 questions on Foundations of Chemistry and Physics.
1. Regarding Lewis structures and valence rules, which propositions are correct?
2. Concerning chemical bonds and molecular structures, which propositions are correct?
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