Stars, other than the Sun, are too far away from Earth to be studied by space probes. How are scientists able to study the composition of a star that is located outside of the Solar System?
OA. by evaluating the different colors of light radiated by the star
OB. by evaluating the mass, density, and volume of the star
OC. by evaluating the air pressure in the atmosphere of the star
OD. by evaluating the kinds of sounds given off by the star

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.  

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