Why does magnesium has a higher ionization enthalpy than sodium?

Gallium has higher ionisation enthalpy than aluminium. Explain why?

Halogen with highest ionization enthalpy is ͟ ͟ ͟͟͟

a) Which of the following has higher first ionization enthalpy, N or O? Justify. b) Which one is bigger, F or F^- ? Why?

Ions having same number of electrons are called isoelectronic ions. Out of Na^+ and Ne which has higher ionisation enthalpy. Explain why?

Lithium has a much higher ionisation energy than cesium but in aqueous solution Li is a morepowerful reducing agent than cesium because

Atoms possessing stable configuration have less tendency to loss and consequently will have high value of ionization enthalpy. a) Justify this statement by taking the case of halffilled and completely filled configurations. b) The noble gases have highest ionization enthalpies in each respective periods. Why?

The first ionization enthalpy of sodium is lower than that of magnesium but its second ionisation enthalpy is higher than that of magnesium. Explain.

Why does the first ionization enthalpy increase as we go from to across a given period of the Periodic Table?

Which one has higher electron gain enthalpy with negative slgn sulphur or Oxygen ?

Among the elements B , Al , C and Si . a. Which has the highest first ionization enthalpy? b. Which has most negative electron gain enthalpy? c. Which has the largest atomic radius? d. Which has the most metallic character?