Question

В каких молекулах существует полярнярная ковалентная связь А)HF б)F2 c)NaF

Answer 1

Ковалентная полярная связь в молекуле   HF

Answer 2

Полянярная ковалентная связь НF

Answer 3

Polar Covalent Bonds in Molecules

A) HF In the molecule HF, there exists a polar covalent bond. This is because fluorine (F) is more electronegative than hydrogen (H), leading to an uneven distribution of electrons in the bond, with fluorine pulling the shared electrons closer to itself, resulting in a partial negative charge on the fluorine and a partial positive charge on the hydrogen.

B) F2 In the molecule F2, there exists a nonpolar covalent bond. This is because both fluorine atoms have the same electronegativity, resulting in an equal sharing of electrons and no significant charge separation within the molecule.

C) NaF In the molecule NaF, there exists an ionic bond. Sodium (Na) is a metal, and fluorine (F) is a nonmetal. When they combine, sodium donates an electron to fluorine, resulting in the formation of an ionic bond, where sodium becomes positively charged (Na+) and fluorine becomes negatively charged (F-).

In summary, HF exhibits a polar covalent bond, F2 exhibits a nonpolar covalent bond, and NaF exhibits an ionic bond