Choose the electronic configurations that are possible from among the following. Explain why the others are impossible.
a '1 s^2 2 s^3 2 p^6'
b '1s^2 2 s^2 2 p^4'
C '1 s^2 2 s^2 2 p^8 3 s^2 3 p^6 3 d^7'
d '1 s^2 2 s^2 2 p^6 3 s^2 3 d^9'

Which of the following configuration is expected to have maximum difference in second and third ionsation enthaIpies? 1 s^2 2 s^2 2 p^2 , 1s^2 2 s^2 2 p^6 3 s^1 , 1s^2 2 s^2 2 p^6 3 s^2 , 1s^2 2 s^2 2 p^1

Find the wrong electronic configurations fromthefollowing. Whatiswrongin these? 1s^2, 2s^1, 2p^6 .

Pick out the wrong subshell electronic configuration from those given below? a) 1s^2 2s^2 2p^7 b) 1s^2 2s^2 2p^2 c) 1s^2 2s^2 2p^6 3s^1 d) 1s^2 2s^2 2p^6 3s^2 3p^6 3d^2 4s^1 e) 1s^2 2s^2 2p^6 3p^6 3d^2 4s^2

Consider the ground state electronic configurations given below and answer the following. A : 1s^2 2s^2 2p^5 , B : 1s^2 2s^2 2p^4 , C : 1s^2 2s^1 , D : 1s^2 2s^2 2p^6 3s^1 , E : 1s^2 2s^2 2p^6 Arrange these configurations in order of increasing I.E.

The subshell electronic configuration of A is given in two different ways. Find the correct method. i) 1s^2 2s^2 2p^6 3s^2 3p^6 3d^1 ii) 1s^2 2s^2 2p^6 3s^2 3p^6 4s^1

Consider the ground state electronic configurations given below and answer the following. A : 1s^2 2s^2 2p^5 , B : 1s^2 2s^2 2p^4 , C : 1s^2 2s^1 , D : 1s^2 2s^2 2p^6 3s^1 , E : 1s^2 2s^2 2p^6 Which of the above configuration is associated with highest and which is with lowest ionisation enthalpy?

Find the wrong electronic configurations fromthefollowing. Whatiswrongin them? 1s^2, 2s^2, 2p^6, 3s^2, 3p^2 .

Elements A, B, C, D and E have the following electronic configuration: A: 1 s^2 2 s^2 2 p^1 B: 1 s^2 2 s^2 2 p^6 3 s^2 3 p^1 C : 1 s^2 2 s^2 2 p^6 3 s^2 3 p^3 D : 1 s^2 2 s^2 2 p^6 3 s^2 3 p^5 which among these will belong to the same group in the periodic table?

Select the correct subshell electronic configuration of "24Cr from the following: 1s^2 2s^2 2p^6 3s^2 3p^6 3d^4 4s^2 , 1s^2 2s^2 2p^6 3s^2 3p^6 3d^5 4s^1