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25.27
A weather balloon contains 59.5 L of helium at sea level, where the atmospheric
pressure is 101.3 kPa. The ballon is released from a 4000 m mountaintop where
the pressure is 61.7 kPa. What is the volume of the balloon when it is released?

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.