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Which element has highest ionization entholpy from Lithium to Neon? And Among Lithium and Berillium,which is the most reactive metal?

Which element has highest ionization entholpy from Lithium to Neon?
And
Among Lithium and Berillium,which is the most reactive metal?

Grade:11

2 Answers

Varun Harnathka
38 Points
11 years ago

Li < Be < .... < Ne 

The IE increases across the period because of higher Nuclear Charge and smaller size. It would be harder across the period to lose electrons as it will be more tightly held by the nucleus. 

Li will be more reactive than Be as it has Lower IE and also since Be has completely filled S orbital, it will not be as reactive as Li. Hence Li > Be (in terms of reactivity)

Revanth - -
36 Points
11 years ago

DEAR RAVI S

 

lithium is more reactive since it doen''t have half fille electronic configuration like berylium i think berylium has most ionization enthalpy since it has half filled electronic configuration u may ask why not nitrogen even though it has half filled electronic cinfiguration but berylium has half fille delectronic configuration is 2s orbital while in nitrogen it is 2p the energy required to remova an electron from 2s is more that the energy required to remoove an electron from 2p so berylium has more ionization enthalpy 

 

 

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