Question

the unfamiliar element are marked with an asterisk (*)

barium*,lanthanum*,aluminium,zinc,chromium*,iron,coppr,palladium*.


a) which two metal would not react with dilute hydrochloric acid?

b) which two unfamiliar metal would react with cold water?

c) which two unfamiliar metal that could not be extracted from iys oxide by reduction with carbon?

i) why should you be able to predict that metal such as iron and chromium have more than one oxidation state?



Hi i have difficulty with this only

Answer 1

Answer:

1. Copper and palladium
2. barium