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Which of the following diagrams is the correct electron dot diagram for Al?

During chemistry class, carl performed several lab tests on two white solids. the results of three tests are seen in the data table. based on this data, carl has concluded that substance b must have bonds.

In an exothermic reaction the bonding energy of the product is: less than the reactants same as the reactants greater than the reactants dependent upon the presence of a catalyst

Which electron configuration represents the electrons in an atom of sodium in the ground state at stp