The code is easy :
<script src="http://connect.facebook.net/en_US/all.js#xfbml=1" type="text/javascript"></script>
<fb:like href="http://www.google.com" send="false" layout="button_count" width="auto" show_faces="true" font=""></fb:like>
but on Chrome it doesnt works (it doesnt show anythings)… why? And how can I fix this?
Use the HTML5 version of the like code. I find it’s easiest to work with it since I don’t have to modify the html tag to include the appropriate XML namespace.