Question

Which of the following does not have the same electron configuration as the others?

Na¹⁺

O^2-

N3+

Mg²⁺

F^1-

What type of state is represented by the following electron configuration? 1s22s22p63s23p3

This electron configuration violates the 4f sublevel.

This electron configuration is the ground state.

This electron configuration is an excited state.

This electron configuration is not a possible state.

Answer 1

1)

Na = 1s22s22p63s1 ---------------------------- Na+ = 1s22s22p6 {one electron is lost and the electronic configuration becomes equal to neon}

O = 1s22s22p4 ----------------------------------- O2- = 1s22s22p6 {2 electrons are gained and the electronic configuration becomes equal to neon}

N = 1s22s22p3 ----------------------------------- N3+ = 1s22s2  {3 electrons are lost hence the electronic configuration become not equal to neon}

Mg = 1s22s22p63s2 ---------------------------- Mg+2 = 1s22s22p6 {2 electrons are lost hence the electronic configuration becomes equals to neon}

F = 1s22s22p5 ------------------------------------ F-1 = 1s22s22p6 {1 electron is gained hence the electronic configuration becomes equal to neon}

Answer: N3+

2)

1s22s22p63s23p3

Answer: This electronic configuration is the ground state.

This E.C is of Phosphorous.