In which of the following arrangements is the order not correct according to the property indicated against it?
- AIncreasing size : $Al^{3+} < Mg^{2+} < Na^{+} < F^{-}$
- BIncreasing $IE_1$ : $B < C < N < O$
- CIncreasing $EA_1$ : $I < Br < F < Cl$
- DIncreasing metallic radius : $Li < Na < K < Rb$
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From the following elements,which of them has the highest second ionisation potential?
Medium
View SolutionThe successive ionisation enthalpies of an element $X$ in $(kJ \ mol^{-1})$ are $1012$,$1907$,$2955$,$4955$,$6275$ and $21,260$ respectively. The element $X$ is:
Which of the following groups of elements loses an electron most easily?
Easy
View SolutionAssertion $(A)$: The first ionisation energy of $Be$ is greater than that of $B$.
Reason $(R)$: $2p$ orbital has lower energy than $2s$ orbital.
Reason $(R)$: $2p$ orbital has lower energy than $2s$ orbital.
The first ionisation potential of $Na$ is $5.1 \, eV$. The value of electron gain enthalpy of $Na^{+}$ will be : ............... $eV$
DifficultJEE MAIN 2013
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