Jawapan

2016-03-21T10:22:52+08:00
Sifat kimia yg sama akan wujud if its came from kump. yg sama . so litium, natrium n kalium are from kump. 1.
-they have 1 elektron valens
-mncapai susunan elektron duplet/oktet yg stabil.
-release 1 elektron utk mmbntuk ion brcas positif