Test Index

Manipal Entrance Test 2013 Chemistry Paper

Question : 19 of 60

Marks: +1, -0

Which has maximum ionisation potential?

Solution:

\mathrm{N}(7)

and

\mathrm{O}^{+}(8-1=7)=1 s^{2} 2 s^{2}

\underset{\text{Maximum multiplicity most stable}}{[2 p_{x}^{1} 2 p_{r}^{1} 2 p_{z}^{1}]}

\mathrm{O}=1 s^{2}, 2 s^{2} 2 p_{x}^{2}, 2 p_{y}^{1}, 2 p_{z}^{1}

Ionisation potential is dependent on the value of Z.

Z

\mathrm{O}^{+}(8)>Z

\mathrm{N}(7)

Thus, ionisation potential of

\mathrm{O}^{+}> \mathrm{N}

Na with one valence electron has least ionisation potential.

Go to Question:

Prev Question

Next Question