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Which of the following atoms could have an expanded octet when it is the central atom in a covalent compound?

B
O
Cl
F

Using the periodic table, complete the table to describe each atom. type in your answers.a ? b? c? d? e? f?

What is the mass of 4 molecules of co2

Which statement about hf is true? it is zero for any compound in its standard state. it is positive when the bonds of the product store more energy than those of the reactants. it is negative when a compound forms from elements in their standard states. it is zero for any element that is in the liquid state.