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In this problem, we have to find the compound which contains all types of bond.
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We know that there are three types of bonds.
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First is ionic bond.
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Second is covalent bond and third is coordinate bond.
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We have given five compound.
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First is nh4, cl, which is ammonium chloride.
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Second is k3, f -e -cn -6, third is h2o2, 4th is h2so4, and fifth is calcium carbonate.
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We know that the forces which held together oppositely charged ions is called ionic bond and covalent bond is found by the mutual sharing of the combining atoms.
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And in case of coordinate bond, the sharing of electron pair between the combining atoms, a coordinate bond is formed by the sharing of electron pair between the combining atoms, but the shared electron pair is contributed by only one atom.
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So we have to draw structure to find which compound contains all three bonds...