Explanation of the solution to the problem:
NaOH – ionic chemical bond. This type of bond is typical for compounds consisting of a metal and a non-metal (bases, salts + hydrides – compounds consisting of an active metal and hydrogen in the oxidation state -1 (NaH)).
CO2 is a covalent polar chemical bond. It is typical for compounds containing non-metal molecules of different elements (for example, SO3, P2O5, etc.).
Ca is a metallic chemical bond. This type of bond is typical for all metals.
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