what is ionisation enthalpy? how does it vary in a group and along the period?
Answers
Answer:
Hi !!!!
Explanation:
* Ionization energy or Ionization enthalpy of elements is defined as. the amount of energy required by an isolated gaseous atom to lose an electron in its ground state.
* As we go from right to left across a period, the nuclear charge increases sequentially, while atomic radius decreases as electrons (in the same shell), are are held closer to the nucleus. ... Ionization energies decrease DOWN a Group, but increase across a PERIOD (from left to right AS WE FACE THE TABLE).
Hope this helps you !!!!
Answer:
Ionization enthalpy is the energy required to remove the most loosely bound electron from an isolated gaseous atom. The size decreases as we move from left to right in a period because the valence shell come closer to the nucleus as we move from left to right.