If we have two gram produce 2 grams were consumed
Due to the mass conversation law which state that the mass in a isolated is neither created nor destroyed by chemical reaction or physical transformation. Therefore the mass of the product must be equal to the mass reactant
The correct answer is an ionic bond
Almost without exceptions, the alkali metals (Li, K, Na,...) are in oxidation state (I) and the alkaline earth metals (Be, Mg, Ca, ...) are in oxidation state (II).
So without confusion, the naming of the metal part is simply the metal name, such as calcium oxide.
The Stock system (which indicates the oxidation state) is required only when the metal exhibits multiple oxidation states, such as iron (II) oxide or iron (III) oxide.
Then again, older nomenclature applies the ending -ous to the lower oxidation state, and -ic to the higher. Using the Latin name ferrum for iron, the previous compounds were named ferrous oxide and ferric oxide respectively.
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All other factors being equal, the liquid with the higher boiling point will be the substance whose molecular force of attraction is greater. Think of it this way, the greater the molecular force of ATTRACTION, the more energy it takes to SEPARATE the molecules by a greater distance and move the substance from the liquid state to the vapor state. Cheers!
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