affinity of atoms !!

This video is very enjoyable , and good to remember the basic of chemistry !

https://video-ams2-1.xx.fbcdn.net/hvideo-xfp1/v/t42.1790-2/11907502_792008120898415_1516473660_n.mp4?efg=eyJybHIiOjYxMywicmxhIjo1ODl9&rl=613&vabr=341&oh=31927b7d2f16ea022e0e59ab3954ec3c&oe=55F1959D

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