Which of the following lanthanoide shows stable electronic configuration ?

Which of the following is affected by the stable electron configuration of an atom? (a) Electronegativity (b) ionisation enthalpy (c ) Electron gain enthalpy Correct answer is:

Which of the following is affected by the stable electron configuration of an atom? (P) Electronegativity (Q) Ionisation energy (Q) Electron affinity Correct answer is:

Which of the following is affected by the stable electron configuration of an atom? (a) Electronegativity (b) ionisation enthalpy (c ) Electron gain enthalpy Correct answer is:

Which of the following can be a stable ground state electronic configuration (only valence shell) of carbon atom? : , , ,

Which one has no stable electronic configuration-

Most stable electronic configuration is of _________.

Most stable electronic configuration is of _________.