Which of the Following Statements About Methane, CH₄ , Is

question 36

Multiple Choice

Which of the following statements about methane, CH₄ , is false?

• A) The carbon-hydrogen bonds in methane are formed by the combination of an sp³ orbital on carbon and a 1s orbital on hydrogen.
• B) The CH bonding molecular orbital has cylindrical symmetry.
• C) The CH antibonding molecular orbital does not have cylindrical symmetry.
• D) The hybrid orbitals on carbon are 25% s character and 75 % p character.
• E) All bond angles are 109.5°.

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Definitions:

Retrograde Amnesia

The loss of pre-existing memories to varying degrees, typically due to an injury or onset of a disease, leaving the individual unable to recall past events.

Organic Causes

Physical or biological factors that lead to medical conditions or diseases, as opposed to psychological or social factors.

Major Historical Events

Significant occurrences in history that have had a profound impact on societies and cultures across time.

Organic Amnesia

Loss of memory caused by brain injury resulting from disease, drugs, accidents (blows to head), or surgery.