Download App

Classification of Elements and Periodicity in Properties — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistryClassification of Elements and Periodicity in Properties1 Mark
MCQ
The ionisation energy of nitrogen is more than oxygen because of :
  • A
    More attraction of electrons by the nucleus.
  • ✓
    The extra stability of half $-$ filled $p\ -$ orbitals.
  • C
    The ionic radius of nitrogen atom is smaller.
  • D
    All of the above are correct.
✓

Answer

Correct option: B.
The extra stability of half $-$ filled $p\ -$ orbitals.
Ionisation energy of nitrogen is more than oxygen due to half $-$ filled $p\ -$ orbitals, which gives it extra stability.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from Classification of Elements and Periodicity in Properties→Classification of Elements and Periodicity in Properties — all question types→Chemistry STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

A carbon-carbon triple bond in ethyne $( - C \equiv C - )$ consists of
→
Hydrogen peroxide is obtained by ‘the electrolysis of $.........$
→
A measured temperature on Fahrenheit scale is $200^\circ F.$ What will this reading be on Celsius scale?
→
Which of the reaction defines $\Delta H_f^o$
→
A piston filled with $0.04\, mol$ of an ideal gas expand reversibily from $50.0 \,mL$ to $375\,  mL$ at a constant temperature of $37\,^oC$. It absorbs $208\, J$ of heat in this process. The value of $q$ and $w$ for the process will be:- $(R = 8.314\, J / mol\, K)$ (ln $7.5 =2.01)$
→
Choose the correct representation of conductometric titration of benzoic acid vs sodium hydroxide.
→
Bohrs atomic model assumes :
→
on mercuration and demercuration produces
→
For the reaction ${H_2}O(s)$ $\rightleftharpoons$ ${H_2}O(l)$ at ${0\,^o}C$ and normal pressure
→
Calculate the energy in joule corresponding to light of wavelength $45\ nm.$ (Planck's constant, $h=6.63 \times 10^{-34} \ J \ s,$ speed of light, $c=3 \times 10^8 \ m \ s^{-1}$)
→