The Number of Significant Figures in the Measurement 5

question 8

Multiple Choice

The number of significant figures in the measurement 5.40 × 10⁵ kg is

• A) one.
• B) two.
• C) three.
• D) five.
• E) eight.

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Definitions:

Condensed Structural Formula

A method of representing the molecular structure of a compound in a simplified manner, showing how atoms are bonded without detailing the actual bond locations.

Resonance Structures

Different Lewis structures for the same molecule that depict the delocalization of electrons within the molecule.

Major Contributor

In resonance theory, refers to the resonance structure that makes the largest contribution to the overall hybrid structure based on stability.

Formal Charges

Formal charges refer to the charge assigned to an atom in a molecule, assuming that electrons in all chemical bonds are shared equally between atoms, despite the actual electronegativity of the atoms.