8. (a) Why the compounds of group 17 with group 13 elements are more
ionic and stable than with (group 1) elements? (b) Na O is more ionic
than Li,O. why?
Answers
Explanation:
Halogens are highly reactive, and they can be harmful or lethal to biological organisms in sufficient quantities. This reactivity is due to high electronegativity and high effective nuclear charge. Halogens can gain an electron by reacting with atoms of other elements...
Compounds of Group 17 elements with Group 13 and 1 elements:
The compounds of Group 17 (halogens) with Group 13 elements (boron family) are more ionic and stable than with Group 1 (alkali metals) elements because of the smaller size and higher charge of the Group 13 cations.
This makes them better able to attract and hold onto the halide anions, which results in a stronger ionic bond.
In contrast, the Group 1 elements have larger atomic radii and lower charges than Group 13 elements, which results in weaker ionic bonds with halogens.
Overall, the smaller size and higher charge of the Group 13 cations allow for stronger electrostatic interactions with halide anions, resulting in more stable and more ionic compounds than those formed with Group 1 elements.
Na₂O and than Li₂O ionic nature:
The sodium ion is better able to attract and hold onto the oxygen atom, resulting in a stronger ionic bond between sodium and oxygen.
The electronegativity of sodium and lithium is similar, but the larger ionic radius of sodium results in a greater separation of charge between the sodium and oxygen atoms in Na₂O, leading to a more ionic character than Li₂O. Therefore, Na₂O is more ionic than Li₂O.
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