Question
Second ionisation potential of $Li, Be, B$ is in the order
✓
Answer
b
$\mathop {Li}\limits_{1{s^2}} \,\mathop {B{e^ + }}\limits_{2{s^1}} \,\mathop {{B^ + }}\limits_{5{s^2}} \, \Rightarrow \,Be\, < \,B\, < Li$
$\mathop {Li}\limits_{1{s^2}} \,\mathop {B{e^ + }}\limits_{2{s^1}} \,\mathop {{B^ + }}\limits_{5{s^2}} \, \Rightarrow \,Be\, < \,B\, < Li$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
The reagent which does not give acid chloride on treating with a carboxylic acid is
Which of the following is a disaccharide
Consider the following flow diagram :-
→Compound $X$ and $Y$ are respectively.
The major product for in the reaction
What is the mole ratio of benzene $(P_B^o = 150\, torr$) and toluene $(p_T^ o= 50\, torr$) in vapour phase if the given solution has a vapour pressure of $120\, torr$ ?
→$EN$ of element $A$ is $E_1$ and $IP$ is $E_2$ hence $EA$ will be
→When a lead storage battery is charged it act as
“Relative lowering in vapour pressure of solution containing non-volatile solute is directly proportional to mole fraction of solute”. Above statement is
Which of the acids cannot be prepared by Grignard reagent
The number of possible enantiomeric pairs that can be produced during mono-chlorination of $2-$methylbutane is
→