Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Medical
  • Try this! In which of the following options the order of arrangement does not agree with the variation of property indicated against it?

In which of the following options the order of arrangement does not agree with the variation of property indicated against it?

  • Option 1)

    Al3+ > Mg2+ < Na+ < F- (increasing ionic size)

  • Option 2)

    B < C < N < O (increasing first ionisation enthalpy)

  • Option 3)

    I < Br < Cl < F (increasing electron gain enthalpy

  • Option 4)

    Li < Na < K < Rb (increasing metallic radius)

 

Answers (1)

 

Electron gain enthalpy -

When an electron is added to a neutral gaseous atom (x) to convert it into a negative ion, the enthalpy change accompanying the process is defined as the electron gain enthalpy 
(\Delta_{eg}H^\circleddash )

-

 

 

Ionization enthalpy -

It is defined as the minimum amount of energy required to remove the outer most shell electron from an isolated gaseous atom (X) to form the gaseous ion.

- wherein

X_{(g)}\rightarrow X^{+}_{(g)}  +e^{-}

 

 The correct order of increasing  negative electron gain ethaepy is I < Bo<F<cl and the correct order of increasing first ionisation ethalpy is B<C<O<N


Option 1)

Al3+ > Mg2+ < Na+ < F- (increasing ionic size)

This option is incorrect

Option 2)

B < C < N < O (increasing first ionisation enthalpy)

This option is incorrect

Option 3)

I < Br < Cl < F (increasing electron gain enthalpy

This option is correct

Option 4)

Li < Na < K < Rb (increasing metallic radius)

This option is incorrect

Posted by

Vakul

View full answer

NEET 2024 Most scoring concepts

    Just Study 32% of the NEET syllabus and Score up to 100% marks

Similar Questions

Trending Articles/News

anam-khan

NTA Overhaul: 1,000 secure exam centres, biometrics to prevent fraud, question paper changes, suggests panel
anam-khan

NEET syllabus 2025 out; NMC uploads subject-wise topics
anam-khan

What changes in NEET UG? Experts’ panel suggests multi-stage exam, security overhaul, simpler process to NTA

Latest Question