Ionisation energy in group I-A varies in the decreasing order as

Ionisation energy increases in the order :

How does ionisation energy vary in a group in the periodic table?

Ionisation energy decreases down the group due to

In any group of the periodic table, atomic size and ionisation energy vary with the increase in atomic number. Which of the following trends is correct?

What is ionisation energy? How does ionisation energy vary along the period in the modern periodic table ?

Ionisation enthalphy of group - 16 elements decreases down the group Why?

The first ionisation energies of Li, Be, B and C are in the order: