Question

Describe ionisation potential...

Answer 1

Explanation:

The ionization potential or otherwise known as the ionization energy, is the measure of the amount of energy required to remove an electron from a neutral atom or ground state. The first electron is removed from the valence shell and can be noted as the first ionization potential.

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Answer 2

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>> Here's your answer :

⚜IONISATION POTENTIAL :

• The ionisation potential or ionisation energy is the energy required to remove a valence electron of an isolated gaseous atom or a neutral atom.
• This energy is minimum for alkali metals because they have only a single electron in their valence shell.
• consequently, This energy is maximum for the noble gases which have completely filled valence shells.
• Fluorine has the highest ionisation potential in the whole periodic table due to its shielding effect .

⚜TRENDS IN IONISATION POTENTIAL IN PERIODIC TABLE:

• Ionisation energy increases on moving from left to right in the periodic table, because the atomic size decreases and the electrons come near to each other. hence it is difficult to remove a valence electron.
• In the contrary , it decreases on going down a group as the atomic size increases.

⚜TYPES OF IONISATION POTENTIAL :

• There are two ionisation potentials for any element , first ionisation potential and second ionisation potential.
• First ionisation potential means the energy required to remove first valence electron of a neutral atom .
• similarly, second ionisation potential means the energy required to remove second valence electron of a neutral atom .
• The second ionisation potential is greater than first ionisation potential because it requires more energy to remove the second electron as it is closer to nucleus and attraction is more.

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