A, B, C, D and E $$($$ Radium is not included $$)$$ are the elements belonging to Second group of Modern periodic table. The correct trend of hydration enthalpy for these ions is $$A2+$$ $$B2+$$ $$C2+$$ $$D2+$$ $$E2+$$. The element ‘B' in the sequence is

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A, B, C, D and E $$($$ Radium is not included $$)$$ are the elements belonging to Second group of Modern periodic table. The correct trend of hydration enthalpy for these ions is  $$A2+$$ > $$B2+$$ > $$C2+$$ > $$D2+$$ > $$E2+$$. The element ‘B' in the sequence is

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$$A)$$ Atomic radius…BeMg>Ca>Sr>Ra>Ba;$$C)$$ EN…..Be>Mg>$$Ca=Sr$$>Ba>Ra;$$D)$$ MP…Be>Ca>Sr>Ba>Ra>Mg ;$$E)$$ BP…Be>Ba>Ra>Ca>Sr>Mg ;$$F)$$ Density…..Ra>Ba>Sr>Be>Mg>Ca ;$$G)$$ Abundance in Earth's crust….Ca>Mg>Ba>Sr>Be>Ra ;$$H)$$ Hydration Enthalpy….$$Be2+$$>$$Mg2+$$>$$Ca2+$$>$$Sr2+$$>$$Ba2+I)$$ $$EM2+/M$$° values are negative.Most negative for $$Ra=Ba$$ and least negative for Be.$$J)$$ $$ERa2+/Ra$$°$$(most$$ $$negative)=EBa2+/Ba$$° $$Mg2+$$ > $$Ca2+$$ > $$Sr2+$$ > $$Ba2+$$ $$=$$ $$Ra2+$$ ;

A, B, C, D and E ( Radium is not included ) are the elements belonging to Second group of Modern periodic table. The correct trend of hydration enthalpy for these ions is A²⁺ > B²⁺ > C²⁺ > D²⁺ > E²⁺. The element ‘B' in the sequence is

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A, B, C, D and E ( Radium is not included ) are the elements belonging to Second group of Modern periodic table. The correct trend of hydration enthalpy for these ions is A2+ > B2+ > C2+ > D2+ > E2+. The element ‘B' in the sequence is

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A, B, C, D and E ( Radium is not included ) are the elements belonging to Second group of Modern periodic table. The correct trend of hydration enthalpy for these ions is A²⁺ > B²⁺ > C²⁺ > D²⁺ > E²⁺. The element ‘B' in the sequence is