Question

What are the general trends of variation of ionization enthalpy in the
periodic table? Explain​

Answer 1

Trends in ionization enthalpy in a group:

The first ionization enthalpy of elements decreases as we move down in a group. While moving down in a group, the atomic number increases and the number of shells also increases. Outermost electrons are far away from the nucleus and thus can be removed easily

Answer 2

Answer :

$\star\:\boxed{\tt{\red{Ionization\: Enthalpy:}}}$

The energy required to remove the most loosely bound electron from an isolated gaseous atom is called the ionization enthalpy.

• The ionization enthalpy also depends on the type of electron to be removed. For the orbitals in the same principal quantum level, the ionization enthalpies are in the order s > p > d > f

In general, The first ionization enthalpy decreases in a regular way on descending the main groups. These is a gradual overall increase in ionization enthalpy as we move from left to right across a period, although the horizontal variation is somewhat irregular.

$\star$ Additional Information :

• The recurrence of similar properties of the elements after certain definite intervals when the elements are arranged in order of increasing atomic numbers in the periodic table is called periodicity.
• Periodicity is observed in a number of properties which are directly or indirectly linked with electronic configuration.