Self-test 4.2 What are the concentrations of the following solutions of drugs in g/100 ml and mg/100 ml?
(i) Carbimazole, A (1%, 1 cm) value. +557 at 291 nm, measured absorbance 0.557 at 291 nm.
(il) Hydrocortisone sodium phosphate, A (1%, 1 cm) value 333 at 248 nm, measured
absorbance 0.666 at 248 nm.
(iii) Isoprenaline, A (1%, 1 cm) value = 100 at 280 nm measured absorbance 0.500 at 280 nm.

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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.