which is the most reactive metal and non-metal ? and why ??

 Most reactive non-metal is flourine and the most reactive metal is francium.

It is so because of the increasing metallic nature down a group and decreasing metallic nature across a period. The nuclear charge is also a factor.

u sure francium is the most reactive metal

due to dr position in pt. most reactive metal is Francium, although it is too rare to completely observe

 

mystichallows95 is correct!

For , Why is flourine the most reactive non-metal?

- http://www.madsci.org/posts/archives/2001-01/979441725.Ch.r.html

Yes, I am sure.

wat xam do u have tomorrow

check ur last qstn i've answered tell if it is correct

no

Fluorine is the most attractive element for electrons for two reasons:

1. It is at the right hand end of its row of the Periodic Table, which means it has the biggest nucleus and more protons than any element in that row. Protons are positive and attract electrons, which are negative. It is the most attractive and therefore most reactive non-metal element in its row.
2. If you go down a group of the table, each element has more “shells of electrons”; these “shells” shield the attractiveness of the protons in the nucleus for the electrons on the outside. At the top of its group, therefore fluorine has very few shells (only one full) and the nucleus is not shielded from the electrons. It is the most attractive and therefore most reactive element in its group.

Thanks

Metal's reactivity depends on the ability to lose electrons ..... as, the ability to lose electrons increases down a group due to increase in atomic size and less nuclear charge ......... the reactivity increases down a group ...  

Hence, Caesium is the most reactive metal .... though Francium can be taken due to its position but it is radioative in nature . hence Caesium is considerd the most raective .....

Non-metal reactivity depends on ability to gain electrons ..... As, the ability to gain electrons decreases down a group due to increase in atomic size and less nuclear pull .... So, it decreases down a group ..... 

among all non-metals halogens r most reactive bcoz of smallest size in period and high nuclear pull .....

So, fluorine is the most reactive non-metal ...... As, it is a halogen and is situated at the top of halogen group ....

Hope this helps !!! 

acc. to position isn't He supposed to be the most "reactive" non - metal ??

m satisfied with ur ans........... but in board xams u can't write out text things............like radioactive nature of Fr.......... acc. to text non-metallicity increases across a period hence the last element of each period is most reactive non-metal............ but this would mean that noble gases are "reactive"............

across a period .... the chemical reactivity first decreases from Gr-IA to Gr-IVA .. then it increases till Gr-VIIA .... noble gases r not taken into account bcoz they r unreactive .....

and abt dat metal part ... I dunno what u write in board ... but in my board .. ICSE .... both r allowed to be written ....