Au; Zn; Mg; Na; Sn; Ca: Use them to answer the following questions – NABTEB QUESTION

i. Arrange the following metals in the order of increasing reactivity.

ii. Hence state which of them can be extracted by electrolysis.

iii. Why is zinc said to be amphoteric.

Solution:

i. Au, Sn, Zn, Mg, Ca, Na

ii. Na, Ca, Mg

iii. Zn is amphoteric because it reacts/forms an oxide which can react with acid and alkalis to form stable salts.