7. Which equation represents the first ionization energy of iodine?
A I2(s) → 2I+(g) + 2e−
B I2(g) → 2I+(g) + 2e−
C ½I2(s) → I+(g) + e−
D I(g) → I+(g) + e−
ANSWER
D I(g) → I+(g) + e−
Analysis of Option/Explanation
Remember, the energy needed to remove 1 mole of electrons from 1 mole of atoms of an element in the gaseous state to form 1 mole of gaseous ion.
It is to be noted that option A & C does not fits to the aforementioned definition because of solid state. And out of remaining options, option B also gets knock out because it is showing 2 electrons being removed. Hence, the correct option is D.
