Question

Name the following (1) A Metal that catches fire in oxygen gas of air(2) A Metal that forms two types of oxides and rusts in the moisture;write their formulae also(3)A Metal used in hot water system (4) A Metal used in long distance cable wires(5) A Metal added to gold to harden it... Plz name them i will mark it as Brainliest answer

Answer 1

1 ) sodium, potassium
5)copper (or) silver

Answer 2

1) Sodium & potassium

2)Zinc.....ZnO2 ...it have both acidic property as well as basics property.

3) Copper

4) copper

5) Copper