Boron or aluminum which element is metal? a semi metal? and what single property best explains the difference in their reactivity?
Answers
Answer:
The usual oxidation state of boron and aluminum is +3, whereas the heavier elements in group 13 have an increasing tendency to form compounds in the +1 oxidation state.
Answer:
Aluminum is a metal and Boron is a semi metal
If you don't understand here's the reason.
Explanation:
Ductile and highly malleable, aluminum can be drawn into wire or rolled into thin foil. The metal is only about one-third as dense as iron or copper. Aluminum is an excellent conductor of heat and electricity. Its thermal conductivity is about one-half that of copper; its electrical conductivity, about two-thirds.
Elemental boron is an allotropic semi-metal, meaning that the element itself can exist in different forms, each with its own physical and chemical properties. ... Extremely hard and resistant to heat, boron is a poor conductor of electricity at low temperatures, but this changes as temperatures rise.