Which electronic configuration of an element has abnormally high difference between second and third ionisation energy?

Question

Which electronic configuration of an element has abnormally high difference between second and third ionisation energy? (A) 1s2,2s2 2p6, 3s1 (B) 1s2,2s2 2p6, 3s2 3p1 (C) 1s2,2s2 2p6, 3s2 3p2 (D) 1s2,2s2 2p6, 3s2

Tardigrade Admin · Accepted Answer

When the element having 1s2, 2s2 2p6, 3s2 configuration, loss two electrons, then it acquire the electronic configuration of noble gas (Ne), so to remove third electron a large amount of energy is required and hence, its second and third ionisation energy have large difference.

Q. Which electronic configuration of an element has abnormally high difference between second and third ionisation energy?

1s $^{2}, 2 s^{2} 2 p^{6}, 3 s^{1}$

$1 s^{2}, 2 s^{2} 2 p^{6}, 3 s^{2} 3 p^{1}$

$1 s^{2}, 2 s^{2} 2 p^{6}, 3 s^{2} 3 p^{2}$

$1 s^{2}, 2 s^{2} 2 p^{6}, 3 s^{2}$

When the element having $1 s^{2}, 2 s^{2} 2 p^{6}, 3 s^{2}$ configuration, loss two electrons, then it acquire the electronic configuration of noble gas (Ne), so to remove third electron a large amount of energy is required and hence, its second and third ionisation energy have large difference.

Q. Which electronic configuration of an element has abnormally high difference between second and third ionisation energy?

1s2,2s22p6,3s1

1s2,2s22p6,3s23p1

1s2,2s22p6,3s23p2

1s2,2s22p6,3s2

When the element having 1s2,2s22p6,3s2 configuration, loss two electrons, then it acquire the electronic configuration of noble gas (Ne), so to remove third electron a large amount of energy is required and hence, its second and third ionisation energy have large difference.

1s $^{2}, 2 s^{2} 2 p^{6}, 3 s^{1}$

$1 s^{2}, 2 s^{2} 2 p^{6}, 3 s^{2} 3 p^{1}$

$1 s^{2}, 2 s^{2} 2 p^{6}, 3 s^{2} 3 p^{2}$

$1 s^{2}, 2 s^{2} 2 p^{6}, 3 s^{2}$

When the element having $1 s^{2}, 2 s^{2} 2 p^{6}, 3 s^{2}$ configuration, loss two electrons, then it acquire the electronic configuration of noble gas (Ne), so to remove third electron a large amount of energy is required and hence, its second and third ionisation energy have large difference.