Question

what is ionisation enthalpy of an element?

Answer 1

The units for ionization energy are different in physics and chemistry. In physics, the unit is the amount ofenergy required to remove a single electron from a single atom or molecule: expressed as an electron volt.

Answer 2

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➜ The energy required to move the most losely bond electron from the outtermost orbit of 1 mole of isolated gaseous atom called as Ionisation potential or Ionisation enthalpy or energy.

➜ Ionisation potential along the group decreases but along the period increases.