Why is second ionisation enthalpy of alka;i metals exteremely high ?

Although IE1 (first ionization energy) values of alkaline earth metals are higher than that of alkali metals, the IE2 (second ionization energy) values of alkaline earth metals are much smaller...

Highest atomic radius has Francium. The nobel gases have the highest ionisation enthalpy. Halogens have high value of electron gain enthalpy. Florine has highest electronegativity.

First ionization energy values of alkaline earth metals are higher than that of alkali metals, but second ionization energy values of alkaline earth metals are much smaller than those of...

Since we are dealing with hydrogen, we know the equation is E=-RH(Z^2/n^2) or E=-RH(1/1). The rydberg constant is 2.178E-18, so take that number, multiply it by 6.022E23 (a mole) and...

The Law of Octaves was published by John Newland in 1864. He proposed that some of the physical and chemical properties of the elements must be repeated after every seven...

First: Ba -> Ba1+ + e- = 502.8 kJ/mol Second: Ba1+ -> Ba2+ + e- = 965.1 kJ/mol

I. Integral Enthalpy Of Solution is the heat absorbed or released when a solute is dissolved in a definite amount of solvent. The heat of solution depends on the nature...

Answer: H2 + 1/2O2 = H2O(l) ΔH (H2) =-286 kJ/mol ΔH H2O (s) = H2O(l) =6.0 kJ/mol n = m/M M (H2O) = 18 g/mol n (H2O) = 100 / 18...

Alkali metals are: - Lithium (Li); - Sodium (Na); - Potassium (K); - Rubidium (Rb); - Cesium (Cs); - Francium (Fr). All alkali metals have their outmost electron in the s-orbital. This pre-determines their high chemical...

Definition (according to https://www.chemguide.co.uk/atoms/properties/ies.html): The first ionisation energy is the energy required to remove one mole of the most loosely held electrons from one mole of gaseous atoms to produce...