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Choose the correct order of increase in electropositivity of alkali earth metals in the options given below

  • a)
    Be2+<Mg2+<Ca2+<Sr2+<Ba2+

  • b)
    Sr2+ > Ba2+ < Be2+ < Mg2+ < Sr2+

  • c)
    Ca2+ > Sr2+ > Ba2+ < Be2+ < Mg2+

  • d)
    Mg2+ > Ca2+ > Sr2+> Ba2+ < Be2+

Correct answer is option 'A'. Can you explain this answer?

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Vikas Saini
Apr 22, 2020
Related Choose the correct order of increase in electropositivity of alkali earth metals in the options given belowa)Be2+<Mg2+<Ca2+<Sr2+<Ba2+b)Sr2+ >Ba2+ <Be2+ <Mg2+ <Sr2+c)Ca2+ >Sr2+ >Ba2+ <Be2+ <Mg2+d)Mg2+ >Ca2+ >Sr2+>Ba2+ <Be2+Correct answer is option 'A'. Can you explain this answer?
answer is wrong,elecropostivity increases down the group as e- losing tendency incrases due to decrase in vander vall forces down the group

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New Words
Feb 20, 2022
Correct Answer : a
Explanation : Atomic no. of Be, Mg, Ca, Sr, Ba are 4, 12,20,38,56 respectively.
On moving down the group, the effective nuclear charge on the outermost electrons decreases. Hence Ba can readily lose electrons and will be the most electropositive element among the alkaline earth metals.

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Hudhavp Hudhavp
Aug 06, 2020
Related Choose the correct order of increase in electropositivity of alkali earth metals in the options given belowa)Be2+<Mg2+<Ca2+<Sr2+<Ba2+b)Sr2+ >Ba2+ <Be2+ <Mg2+ <Sr2+c)Ca2+ >Sr2+ >Ba2+ <Be2+ <Mg2+d)Mg2+ >Ca2+ >Sr2+>Ba2+ <Be2+Correct answer is option 'A'. Can you explain this answer?
Going down the group electropositivity increases. as the tendancy of losing electon increases

Gauri Kumari
Oct 03, 2018
Can anyone explain it

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answer is wrong,elecropostivity increases down the group as e- losing tendency incrases due to decrase in vander vall forces down the group