Classification Of Elements And Periodicity In Properties Question 1
Question 1 - 25 January - Shift 1
Inert gases have positive electron gain enthalpy. Its correct order is negative
(1) $He<Ne<Kr<Xe$
(2) $He<Ne<Kr<Xe$
(3) $He<Ne<Kr<Xe$
(4) $He<Ne<Kr<Xe$
Show Answer
Answer: (3)
Solution:
Formula: Electron gain enthalpy
| Element | $\Delta$ egH $[KJ / mol]$ |
|---|---|
| $He$ | +48 |
| $Ne$ | +116 |
| $Kr$ | 0 |
| $Xe$ | 0 |
From NCERT
So, order is $He>Ne>Kr>Xe$
BETA
