How electronegativity difference could explain the …
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Meghna Thapar 5 years, 6 months ago
On coming down the group, the difference in the size of cation and anion increases, thereby making the ionic bond weaker, thus reducing the lattice energy. Also, lesser will be the lattice energy, lesser will be the ionic character. Thus, down the group, the ionic character of the hydrides decreases. The more electronegative an atom is, the more its bonds to other atoms will have ionic character, especially to elements that have metallic character. ... HF and NaF have ionic bonds because elements in the first column of the periodic table can transfer their single valence electron to another atom with relative ease.
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