Question
Which of the following element have second highest ionization enthalpy, and why?
$Be , Li , B$ and C
$Be , Li , B$ and C
✓
Answer
Out of $Be , Li , B$ and C , the second ionization enthalpy of Li is highest because when one electron is removed from it, Li attain the inert gas configuration [He] which is stable, and it require more energy to remove an electron from it.
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
More "2 Marks Questions" from PART - 1 CH - 3 Classification of Elements and Periodicity in Properties→PART - 1 CH - 3 Classification of Elements and Periodicity in Properties — all question types→Chemistry STD 11 Science question papers→Rajasthan Board STD 11 Science question papers→Rajasthan Board question paper generator→
Similar questions
Identify the redox reactions out of the following reactions and identify the oxidising and reducing agents in them.
$\text{Fe}_2\text{O}_3\text{(s)}+3\text{CO(g)}\xrightarrow{ \ \ \ \Delta\\\ \ \ \ }2\text{Fe(s)}+3\text{CO}_2\text{(g)}$
→$\text{Fe}_2\text{O}_3\text{(s)}+3\text{CO(g)}\xrightarrow{ \ \ \ \Delta\\\ \ \ \ }2\text{Fe(s)}+3\text{CO}_2\text{(g)}$
Calculate the volume of 34g of NH3 at STP.
Give reason for the following.
- Ionic compounds are soluble in water whereas covalent compounds are mostly insoluble in water.
- Ionic compounds have higher melting points than the covalent compounds.
$\text{A}+\text{3B}\rightleftharpoons\text{2X,}\text{K}=\text{x}$
What will be the equilibrium constant for the decomposition of 1mol of X?
→What will be the equilibrium constant for the decomposition of 1mol of X?
In each of the following pairs of salts, which so one is more stable?
- Ferrous and ferric salts.
- Cuprous and cupric salts.
Arrange s, p and d sub-shells of a shell in the increasing order of effective nuclear charge (Zeff) experienced by the electron present in them.
Classify the following species into Lewis acids and Lewis bases and show how these act as Lewis acid/base:
a. $OH ^{-}$
b. $F ^{-}$
c. $H ^{+}$
d. $BCl _3$
→a. $OH ^{-}$
b. $F ^{-}$
c. $H ^{+}$
d. $BCl _3$
Expansion of a gas in vacuum is called free expansion. Calculate the work done and the change in internal energy when 1litre of ideal gas expands isothermally into vacuum until its total volume is 5litre?
How many electrons are present in 16g of CH4?