The first ionisation potential $(IP)$ of the elements $Na$,$Mg$,$Si$,$P$,$Cl$ and $Ar$ are $5.14$,$7.65$,$8.15$,$10.49$,$12.97$ and $15.76 \ eV$,respectively. The $IP$ (in $eV$) of $K$ is closest to
- A$18.3$
- B$18.2$
- C$4.3$
- D$6.4$
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The successive ionisation energies (starting from the $1^{st}$) of an element are $801$,$2430$,$3660$,$25000$,and $32800 \ kJ \ mol^{-1}$,respectively. The element is:
Which of the following processes represents the highest ionization energy?
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View SolutionWhich of the following elements has the highest value of first ionization enthalpy $(\Delta_i H_1)$?
Both nitrogen and oxygen have electrons in the $2p$ orbital. In which of these is the electron-electron repulsion greater,and what is its effect?
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View SolutionIn the photoelectric effect,if the work functions of $Li$,$Na$,and $Rb$ are $2.41 \ eV$,$2.30 \ eV$,and $2.09 \ eV$ respectively,the work function of $K$ could approximately be in $eV$?
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