A metalloid has physical and chemical properties of A: metals , nonmetals
B: metals and noble gases
C: halogens and noble gas

Typical metalloids have a metallic appearance, but they are brittle and only fair conductors of electricity. Chemically, they behave mostly as nonmetals. They can form alloys with metals. Most of their other physical properties and chemical properties are intermediate in nature.

1 a

2 d

3 a

4 c

explanation:

the answers would be

the first one and the second one