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  • Which among the following equations has enthalpy equal to first Ionisation energy of element M?Option: 1 <img alt="\mathrm{M(s) \rightarrow M^{+}(g)

Which among the following equations has enthalpy equal to first Ionisation energy of element M?

Option: 1

\mathrm{M(s) \rightarrow M^{+}(g) + e^{-}}
 


Option: 2

\mathrm{M\left (l \right ) \rightarrow M^{+}(g) + e^{-}}
 


Option: 3

\mathrm{M(g)\rightarrow M^{+}(g) + e^{-}}


Option: 4

\mathrm{M^{+}(g) \rightarrow M^{+2}(g) + e^{-}}


Answers (1)

best_answer

By definition –
First ionization energy is defined as the energy required to remove a single electron
from the outer shell of a neutral gaseous atom. Consequently, the atom changes to a
mono-valent cation
\mathrm{M(g) + IE_1\rightarrow M^+ (g) + e^{-}}

Hence Option 3 is correct.

Posted by

Devendra Khairwa

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