![\[E0\text{ }for\text{ }M2+\left( aq \right)\text{ }+\text{ }2e\to \text{ }M\left( s \right)\text{ }\left( where\text{ }M\text{ }=\text{ }Ca,\text{ }Sr\text{ }or\text{ }Ba \right)\]](https://www.learnatnoon.com/s/wp-content/ql-cache/quicklatex.com-30816136accb3333fde729011cce90bd_l3.png "Rendered by QuickLaTeX.com")
Solution:
(a) The ionic and nuclear sizes of the metals will in general increment while going down the antacid gathering.
The expanding request of the ionic sizes of the salt metal particles is as displayed beneath:
Li+ < Na+ < K+ < Rb+ < Cs+
More modest the size of a particle, more noteworthy is its capacity to get hydrated. Li+ particle gets vigorously hydrated since it is the littlest in size though Cs+ has the biggest size and is the most un-hydrated particle. The salt metal particles when masterminded in the diminishing request of their hydrations is as displayed beneath:
Li+ > Na+ > K+ > Rb+ > Cs+
Higher the mass of a hydrated particle, the lesser is its ionic versatility. Along these lines, hydrated Li+ is the most un-portable particle while hydrated Cs+ is the most versatile particle.
The ionic versatility of the antacid metal particles are in the accompanying request:
Li+ < Na+ < K+ < Rb+ < Cs+
(b) The main metal that can shape a nitride straightforwardly is Lithium on the grounds that Li+ has a more modest size and is effectively viable with the N3–particle. Subsequently, the cross section energy delivered is exceptionally high which is sufficient to beat the measure of energy expected to shape N3-particle.
(c) Electrode potential (E°) of any M2+/M anode is chosen by three components:
(I) Enthalpy of hydration
(ii) Enthalpy of vaporization
(iii) Ionization enthalpy
The total impact of these components on Ba, Sr, and Ca is practically something very similar.
Subsequently, their cathode possibilities are likewise