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mafiozo [28]
4 years ago
13

Which elements has the smallest first ionization energy?

Physics
1 answer:
Setler [38]4 years ago
8 0

Answer:

Cesium has smallest ionization energy.

Explanation:

Ionization energy is the energy that an atom at ground state must be absorb to release an electron to form a cation. for eg.

H ⇒ H^{+} + e^{-}

The unit of ionization energy is \frac{KJ}{mol}.

The ionization energy is minimum for cesium  & maximum for fluorine.

Ionization energy depends upon the radius of atom. cesium has smallest radius so it has low Ionization energy.

Therefore the cesium has smallest ionization energy.

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