A certain unknown mineral can scratch pyrite. Based on the table, would the unknown mineral more likely scratch gypsum or would the unknown mineral more
likely be scratched by gypsum? The unknown mineral would more likely:
A. Scratch gypsum, because the hardness of the unknown mineral is
less than 2.
B. scratch gypsum, because the hardness of the unknown mineral is
greater than 2.
C. be scratched by gypsum, because the hardness of the unknown
mineral is less than 2.
D. be scratched by gypsum, because the hardness of the unknown
mineral is greater than 2.
Mii

answer: option (b) is the correct answer.

explanation:

a covalent bond is formed by sharing of electrons. whereas polarity arises due to difference in electronegativity of two atoms.

therefore, more is the electronegativity of an atom which combines with the titanium, more readily it will induce a partial positive and negative charge.

thus, out of the given options fluorine is most electronegative and has an incomplete octet. therefore, it will readily combine with titanium to share the electrons and complete its octet.  

a polar bond is formed when electrons are shared unevenly between atoms

5.6⋅10−^19  j

do you need the explaination?