Question

D. The following elements are given :-
[ Ca, Pb, Na, Cu, Zn, Fe, Al )
i. Arrange the given elements in the decreasing order of reactivity.
ii. Which of these is most likely to be found in free state in nature?
iii. Which of these is/are most likely to react with cold water?
iv. Which of these is most likely to react readily when exposed to the air?
v. Metal hydroxide of which element as per the given list is very stable.
ratne O
tron
and 10
trons​

Answer 1

Answer:

$1)na \: ca \: al \: zn \: fe \: pb \: cu \:$

$2) \: cu$

$3)na \: and \: ca$

$4)na$

Answer 2

Answer:

(I) Na , Ca, Al, Zn, Fe, Pb, Cu

(II) Cu

(III) Mg

(IV) Na