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Which statement is not correct?
I. The transition state of the hydroboration reaction is a four-membered ring intermediate.
II. The intermediate with the partial positive charge on the higher substituted carbon is lower in energy.
III. The intermediate with the partial positive charge on the higher substituted carbon is higher in energy.
IV. Hydroboration is a stereoselective reaction: boron and hydrogen add simultaneously from the same side of the double bond
Snellen Chart
A tool used in eye examinations to measure visual acuity, consisting of rows of letters decreasing in size.
Jaeger Chart
A visual acuity chart used to test a person's reading and detail vision, often applied in eye exams to detect vision issues.
Ishihara Book
A color vision test book consisting of a series of plates filled with colored dots, used to diagnose red-green color deficiencies.
Pelli-Robson Chart
A tool used in visual examinations to assess contrast sensitivity, featuring a series of letters in progressively lower contrast.
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