HELP please :I

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I have also written this question n the chemistry section nd i thought people might reply faster on this so please help.

- How group 1 metals react

- Why reactivity changes down the group

Posted: 10-10-12 17:55 by simran

As you go down group 1 the metals are more reactive and the boiling point and melting point of the metal decreases.

Posted: 10-10-12 17:58 by ? Secret - Team GR

Lithium is the least reactive, it floats and fizzes

Sodium is the second least reactive - melts, skates on water and sparks on yellow flame

Potassium is the third most reactive - violoently whizzes on water and catches on fire

Posted: 10-10-12 17:59 by ? Secret - Team GR


:D :D :D

Posted: 10-10-12 18:15 by simran

UR welcome :) 

do you need to know anything else ?

Posted: 10-10-12 18:20 by ? Secret - Team GR


what is the word and balanced symbol equation for sodium reacting with water. 

Posted: 10-10-12 18:24 by simran

sodium+water=sodium hydroxide+hydrogen

Posted: 10-10-12 18:29 by ? Secret - Team GR

Na + H2O --> NaOH + H2

2Na + 2H2O --> 2NaOH + H2

Posted: 10-10-12 18:30 by ? Secret - Team GR

hats great thanks

Posted: 10-10-12 18:46 by simran

its okay :)  .. do u need anyfine else or u okay ?

Posted: 10-10-12 21:29 by ? Secret - Team GR

Reactivity changes as you go down the group because the electron shells are progressively further from the nucleus, and are therefore less tightly bound to it. Less tightly bound = more reactive.

Posted: 11-10-12 01:21 by Robotperson