Periodic Table and Periodicity · Chemistry · KCET

The correct order of first ionisation enthalpy of given elements is

A pair of amphoteric oxides is

In which one of the following pairs, both the elements does not have $$(n-1) d^{10} n s^2$$ configuration in its elementary state?

Amphoteric oxide among the following

The property of halogens which is not correctly matched is

Which noble gas has least tendency to form compounds?

Elements $$X, Y$$ and $$Z$$ have atomic numbers 19, 37 and 55 respectively. Which of the following statements is true about them ?

The third ionisation enthalpy is highest in