Why is a volumetric pipette more precise than a measuring cylinder?

Volume of liquids are measured in experiments. The volume is measured by taking reading that coincides with the lower meniscus of the liquid. There are several measuring devices used in laboratory such as beakers, measuring cylinders,  volumetric pipets etc. volume measured from volumetric pipets are considered to be more precise than from measuring cylinders because they are simple, and its long neck lowers the chances of error in looking for the meniscus.

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.