Question

Which metal can replace zinc in a single replacement reaction?
a. Copper b. Potassium c. Iron d. Lead
I know it's potassium due to my answer sheet but I don't know why. Please help I would like to understand this.

Answer 1

well, Cu, Fe & Pb is lower than Zn in the reactivity series so, they can't displace Zn
K is higher than Zn in the reactivity series!

Answer 2

Do u get me @musicmakeslife

Answer 3

I'm sorry but what do you mean by reactivity series?

Answer 4

Okay.. do u know the arrangement of metals frm K, Na....
how do u classify them

Answer 5

I actually found a table on them and I understand now thank you sooo much!!!! Could you help me with another one? I don't need the answers just help understanding them

Answer 6

I can try...

Answer 7

Oh thank you :) I don't understand which of the following elements would be predicted to have the smallest radius?
a. He b. Xe c. Fr d. Fe

Answer 8

It shld be He

Answer 9

Ok how did you get that?

Answer 10

do u hv the table

Answer 11

No I don't believe I do unfortunately...

Answer 12

u tell me He is in which group

Answer 13

always remember that atomic radius size increases down the group

Answer 14

http://prntscr.com/3rd1rg

Answer 15

Gosh I thought that hv was the type of table now I understand it as have I apologize I might have the correct table and He is a noble gas

Answer 16

Nw, u get it..

Answer 17

Yes I do thank you so much for the help I don't get chemistry at all I have A's in all my classes including college ones but a D in chemistry you are saving my grade by helping me thanks again!!!!!

Answer 18

you're wlcm

Answer 19

If I have any other chemistry questions in the future can in ask you?