Which of the following electronic configurations has the lowest ionization enthalpy ?
(a) `1s^2 , 2s^2 , 2p^5`, ,(b) `1s^2 , 2s^2 , 2p^6`
(c) `1s^2 , 2s^2 , 2p^6 , 3s^2`.

Increasing order of Electron affinity for following configuration. 1s^2 , 2s^2 , 2p^3 (b) 1s^2 2s^2 2p^4 [c] 1s^2 , 2s^2 , 2p^6 , 3s^2 , 3p^4 (d) 1s^2 , 2s^2 , 2p^6 , 3s^2 , 3p^3

Elements A,B,C,D and E gave the following electronic configuration: A 1s^2 , 2s^2 , 2p^1 B 1s^2 2s^2 2p^6 3s^2 3p^1 C 1s^2 2s^2 2p^6 3s^2 3p^3 D 1s^2 2s^2 2p^6 3s^2 3p^5 E 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 Which among these will belong to the same group in the periodic table?

What does the electronic configuration 1s^2 , 2s^2 , 2p^5 , 3s^1 indicate?

Which of the following element is represented by electronic configuration 1s^2, 2s^2, 2p^1_x, 2p^1_y, 2p^1_z

If the electronic configuration of atom is 1s^(2) , comment on the stability of A_(2) molecule and A_(2)^(+) ion.

The valence electronic configuration of five neutral atoms are given below A = 3s^2, B = 3s^1, C = 2s^2 2p^1, D = 2s^2 2p^3, E = 2s^2 2p^6 Write the empirical formula of compound of (i) A and D (ii) B and D (iii) D and D (iv) E and E

Two elements have outer most electronic configuration as 2s^2 and 2s^2 2p^1 . Which one has higher ionisation energy?

The element with electronic configuration 1s^(2)2s^(2)2p^(4) is present in group_______.

What will be the position in periodic table of the element having electronic configuration 1s^(2)2s^(2)2p^(4) .