Two elements have electronegativity of $1.2$ and $3.0$ . Bond formed between them would be :

ionic

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polar covalent

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co-ordinate

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metallic

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Solution

The correct option is A ionic
The electronegativity difference between the two atoms is $3.0 - 1.2 = 1.8$ . It is large, hence, the bond formed is an ionic bond. The more electronegative atom gains one or more electrons to form an anion and the less electronegative atom loses one or more electrons to form a cation.

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