s-Block ElementsHard
Question
Which is not s-block element ?
Options
A.[Ar]4s23d104p6 5s1
B.1s2 2s22p1
C.[He] 2s22p63s1
D.None of these
Solution
The block of an element depends on the type of sub-shell which receives the last electron. As last electron enters in p-subshell of outer most shell according to Aufbau rule, the element of option (B) belongs to p-block.
Create a free account to view solution
View Solution FreeMore s-Block Elements Questions
A solution of sodium in liquid ammonia is strongly reducing and highly conducting due to the presence of...The ionization enthalpies of the alkali metals decrease down the group from Li to Cs because :...The hydration energy of Mg2+ ion is higher than that of :...Going down in II A group, following properties decrease :...Sodium carbonate reacts with sulphur dioxide in aqueous medium to give :...