Q. 38

Explain the devia

Answer :

The ionisation enthalpy of elements varies across period and group. The ionisation enthalpy decreases down a group and increases as we move from left to right in a period. It is affected by the following parameters.

• Effective nuclear charge on the outermost electrons.

• Electron- electron repulsion force.

• Stability of the element due to half-filled and fully filled orbitals.

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