Periodic Classification and Periodic Properties Quiz-01

1. The statement that is not correct for the periodic classification of elements is


2. The element with the highest first ionisation potential is


3. Which of the following represents the correct order of increasing first ionisation enthalpy for Ca, Ba, S, Se and Ar?


4. The first ionisation potential of Na,Mg,Al and Si are in the order


5. The first ionisation potential of Na is 5.1 eV. The value of electron gain enthalpy of  Na+ will be


Question 1 of 5