Science Help Needed

[Wayne]

I'm doing a practice science paper, and I'm stuck on the last few questions.
This is one of them:

X, Y and Z represent 3 halogens
Y displaces X from a solution of its ions
Z does not displace X or Y from solutions of their ions
What is the order of their reactivities?
A - X Y Z
B - Y X Z
C - Y Z X
D - Z X Y

If you can explain to me what it means, I will be very greatful. :rolleyes:

[Legend-Killa]

Ok im not really sure but i think its D-ZXY
Because Z does not displace anything then X doesnt displace anything then Y wont affect the 2 before it i think... wat year is this? Im only 12 turning 13 2moro so i dont know if im right (going into 8th grade)

[Detox]

Wouldnt it be XYZ because Z does not displace either X or Y so it is least reactive, X displaces Y so it must be the most reactive.

[Legend-Killa]

I guess i was rong -.-

[Rou]

-Stares Blankly-

[Tommy]

Nooo not chemistry *Cries*

I was never good at that. Im thinking B? Y X Z

[Wayne]

Lmao. Nvm, I've had the results back ages ago.
The answer was actually B

[Tommy]

Omg i got it right,why did i get a B on my Halogens test?

[Emicat]

*falls alseep* -.- zZzZz.....

[Swan0]

Sooo boring science is sum time ZzZzZzZzzzZZZzZZZZ