What is sodiums first ionization energy?

Answer 1

I'm assuming you're referring to the problem Na(g)+Cl(g) -> Na+(g)+Cl-(g)

Since, ionization energy is basically the amount of energy it takes to dislodge one electron from a neutral atom, Cl has to dislodge one electron to stabilize Na

Thus,

Na -> Na++e-

Answer 2

The first ionisation energy of an element is the energy required to remove one electron from each of a mole of free gaseous atoms of that element to form 1 mole of gaseous mono-positive ions.

Among all the elements in the Periodic Table, helium has the highest first ionization energy.

Answer 3

Sodium's first ionization energy is 495 kJ / mol.

Answer 4

the energy needed to remove the outermost, or highest energy, electron from a neutral atom in the gas phase.

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