Final answer:
Oxygen, as a non-metal, does not improve conductivity of electricity or heat. Additionally, it does not impact the melting or boiling points unless it chemically reacts to form new compounds. Therefore, the answer is d) Oxygen has no effect on electrical and heat conductivity, boiling point, or melting point.
Step-by-step explanation:
Effects of Oxygen on Electrical and Heat Conductivity, and Melting and Boiling Points
Oxygen, being a non-metallic element, does not contribute to electrical and heat conductivity in the way metals do. Good conductors of electricity such as copper and silver are also good conductors of heat because both properties depend on the ability of electrons to move freely, which oxygen does not facilitate. Moreover, oxygen does not significantly alter the melting or boiling points of substances unless it reacts chemically to form new compounds, which could have different melting and boiling points than the original substances due to changes in their intermolecular forces.
Given the options provided:
Oxygen increases electrical and heat conductivity, raises the boiling point, and lowers the melting point.
Oregon decreases electrical and heat conductivity, lowers the boiling point, and raises the melting point.
Oxygen has no effect on electrical and heat conductivity, boiling point, or melting point.
The correct answer is:
d) Oxygen has no effect on electrical and heat conductivity, boiling point, or melting point.