Which element behaves chemically both as
metal and non-metal ?
[ A ] Argon
[ B ] Carbon
[ C ] Xenon
[ D ] Boron
Answer : Option
Boron was discovered by Joseph Louis
Gay – Lussac and Louis Thenard on
30 June 1808. It is known as very
hard element. It is a black and semimetallic element.
Boron is used as rocket fuel. It is used
to produce borosilicate glass and is used
as a controller of nuclear reactors.