Question

In a laboratory four metals A, B, C, D were arranged. Identify and arrange them in the ascending order of the reactivity based on the the clues given below-

A is essential for bones
B forms reddish brown oxide with air.
C is a red metal used in electrical wires
D is a liquid non metal​

Answer 1

IT CAN BE OBSERVED THAT

A=CALCIUM

B=IRON

C=COPPER

D=BROMINE

FROM THE REACTIVITY SERIES OF METALS WE CAN CONCLUDE THAT THE ORDER OF REACTIVITY WILL BE AS FOLLOWS

A>B>C>D