s-Block ElementsHard
Question
The set representing the correct order of first ionisation potential is :
Options
A.K < Na < Li
B.Be > Mg > Ca
C.B > C > N
D.Ge > Si > C
Solution
Down the group size increases and, therefore, attraction between valence shell electron and nucleus decreases and thus ionisation energy decrease.
Along the period the atomic size decreases and nuclear charge increases. So generally the ionization energy increases. However, half-filled and completely filled valence shell electron also affect the ionization energy along the period.
Along the period the atomic size decreases and nuclear charge increases. So generally the ionization energy increases. However, half-filled and completely filled valence shell electron also affect the ionization energy along the period.
Create a free account to view solution
View Solution FreeMore s-Block Elements Questions
Be and Al have following resemblance due to diagonal relationship :...Consider the following statements ;S1 : Ozone reacts with dry KOH forming a deep red/orange coloured compound and libera...Going down in II A group, following properties decrease :...Among LiCl, RbCl, BeCl2, MgCl2 the compounds with greatest and least ionic character respectively are :...Which of the following metal cation can be detected by flame test :...