Which of the following electronic configurations represents a sudden large gap…

CHEMISTRY · Single correct · AP · Chemistry · Atomic Structure and Properties · Atomic Structure and Properties

Problem

Which of the following electronic configurations represents a sudden large gap between the values of second and third ionisation energies of an element? (1)

1s^2, 2s^2 2p^3

(2)

1s^2, 2s^2 2p^6, 3s^2 3p^3

(3)

1s^2, 2s^2 2p^6, 3s^2 3p^1

(4)

1s^2, 2s^2 2p^6, 3s^2

Related theory

Electronic Configuration
Atomic Structure
Ionisation enthalpy
Classification of Elements and Periodicity in Properties
Ionisation potential
Periodic Trends in Physical Properties

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