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Properties and Characteristics of Metals:
1. Malleable
2. Ductile
3. Good conductors of electricity and heat.
4. Have luster (metallic luster)
Properties shared by Metalloids and Nonmetals:
1. Both metalloids and nonmetals are poor conductors of heat.
2. Metalloids and nonmetals are brittle and not ductile.
Properties and Characteristics of Nonmetals:
1. Brittle
2. Non-Ductile
3. Poor conductors of heat and electricity.
4. No luster.
A. To unify India hrhfjejdjshddbbddbxudiwbdvsoebfvdiabdbdbdhdhdjdb
Answer: D.) They study the stars and gases around black holes.
Explanation: Given the technology that we have in the 21st century (as of 2020), scientists cannot study black holes directly, and must resort to observing and detecting how the presence of them exists by noting how they take an effect on the matter surrounding them.
