When the Ls Orbitals of Two Hydrogen Atoms Combine to Form

question 27

Multiple Choice

When the ls orbitals of two hydrogen atoms combine to form a hydrogen molecule,which molecular orbitals are formed?

• A) One bonding molecular orbital only
• B) Two bonding molecular orbitals
• C) One bonding molecular orbital and one antibonding molecular orbital
• D) Two antibonding molecular orbitals
• E) Three bonding molecular orbitals

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Definitions:

Heat of Vaporization

The amount of energy required to turn a liquid into a gas at its boiling point.

Heat of Fusion

The amount of energy required to change a substance from the solid phase to the liquid phase at its melting point without changing its temperature.

Phase Graph

A graphical representation showing the various phases (solid, liquid, gas) of a substance as a function of temperature and pressure.

Specific Heat Capacity

A physical property that describes the amount of heat energy required to raise the temperature of a substance by one degree Celsius (or one Kelvin).