How do you know if a reaction is exothermic include a example

you will know if its a exothermic reaction if the temperature increases. Lets say your house its 40 degrees and when you turn the heat up it goes to 67 degrees. That is increase in temperature.

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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