The element of group having lowest ionisation energy is

The isoelectronic ion having lowest ionisation energy is

The isoelectronic ion having lowest ionisation energy is

The element having lowest ionisation energy among the following is

Configuration of the element with the highest ionisation energy is

The elements that possess the lowest ionisation energy among the following

Which of the following electronic configuration corresponds to an element having lowest ionisation energy

Among Li , Na , K , Rb , Cs , the element with the lowest ionisation energy is __________.

Among Li , Na , K , Rb , Cs , the element with the lowest ionisation energy is __________.

In the long form of Periodic Table, the elements having lowest ionisation potential are present in