If the Radius of a Silicon Atom Is 1

question 25

Multiple Choice

If the radius of a silicon atom is 1.18 x 10-8 cm,what is the radius in nm?

• A)1.18 x 10-15 nm
• B)1.18 x 10-10 nm
• C)1.18 x 10-1 nm
• D)1.18 x 103 nm
• E)none of the above

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Definitions:

Self-condensation

A reaction in which a molecule undergoes condensation with itself to form a larger molecule, often in the presence of a catalyst.

Ester

Organic compounds derived from an acid where at least one –OH (hydroxyl) group is replaced by an –O– (alkoxy) group.

Aldol Reaction

A type of organic reaction where an enol or an enolate ion reacts with a carbonyl compound to form a beta-hydroxyaldehyde or beta-hydroxyketone, followed by dehydration to give a conjugated enone.

Crossed Aldol Condensation

A chemical reaction involving two different carbonyl compounds to form a β-hydroxyketone or an α,β-unsaturated ketone under basic or acidic conditions.