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An alkaline e...

Question

An alkaline earth element has the $I_{1}, I_{2}$ and $I_{3}$ values $9.2$ eV/atom, $18.5$ eV/atom and $x$ eV/atom. Then x is:

3

eV/atom

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154

eV/atom

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20

eV/atom

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10

eV/atom

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Solution

The correct option is B $154$ eV/atom
Alkaline earth metals have high third ionization energy as they attain noble gas configuration after losing two electrons .It is very difficult to remove electron from penultimate shell . Thus the value of $x$ should be $>> 18$ eV

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An alkaline earth element has theI1,I2 and I3 values 9.2 eV/atom, 18.5 eV/atom and x eV/atom. Then x is:

The correct option is B 154 eV/atomAlkaline earth metals have high third ionization energy as they attain noble gas configuration after losing two electrons .It is very difficult to remove electron from penultimate shell . Thus the value of x should be >>18eV

An alkaline earth element has the $I_{1}, I_{2}$ and $I_{3}$ values $9.2$ eV/atom, $18.5$ eV/atom and $x$ eV/atom. Then x is:

The correct option is B $154$ eV/atom
Alkaline earth metals have high third ionization energy as they attain noble gas configuration after losing two electrons .It is very difficult to remove electron from penultimate shell . Thus the value of $x$ should be $>> 18$ eV