The I.E. and I.E. in of a few elements designated by P, Q, R, S are shown below: |…

CHEMISTRY · Single correct · CBSE · Chemistry · Classification of Elements and Periodicity in Properties · Classification of Elements and Periodicity in Properties

Problem

The I.E.

_1

and I.E.

_2

\text{kJ mol}^{-1}

of a few elements designated by P, Q, R, S are shown below:

Atom	I.E. $_1$	I.E. $_2$
P	2372	5251
Q	520	7300
R	900	1760
S	1680	3380

Which of the elements is likely to be reactive non-metal? (1) P (2) Q (3) R (4) S

Related theory

Ionisation potential
Ionisation enthalpy
Classification of Elements and Periodicity in Properties
Periodic Trends in Physical Properties

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