Respuesta :
D. HF will have the most polar bond out of all the options.
As we see in the group from up to down the electronegativity of the substances decreases. The ability of an atom or functional group to draw electrons to itself is known as electronegativity in chemistry. An atom's electronegativity is influenced by both its atomic number and how far away from its charged nuclei its valence electrons are located.
A kind of covalent bond where the distribution of electrons between the two atoms is uneven. As a result, the molecule has a slight positive charge on one end and a slight negative charge on the other.
From all the compounds given here the fluorine atom has the highest electronegativity and hence it will most strongly attract the atoms towards itself and hence its bond with hydrogen will be the most polar.
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