1. The problem statement, all variables and given/known data While studying alkaline earth metals of the s block elements I found this equation : Be (OH)2+2HCl +2H2O →[Be (OH)4]Cl2 It is clear that in the complex, the oxidation state of Berrylium is +6. But how is even that possible? 2. Relevant equations None 3. The attempt at a solution We know that Be has only 2 electrons in its s orbital and moreover has a total of only 4 electrons, so how is even that possible?