Octet Rule

[motivated dent]

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So can Al and Si (Silicon) form only 3 and 4 bonds? row three is considered to have more than 8 electrons no? and what about the metals (specifically alkaline and alkaline earth metal groups). transition metals follow the 18 octet rule but what about the two first columns?

 

[khakwanit1]

There are some exceptions to octet rule. You should read about it in one of the preparation books.