The successive ionization enthalpies () of an isolated atom always strictly increase. Which of the following massive jumps in successive strongly indicate the specific valence shell configuration of t

Question

The successive ionization enthalpies ($IE_1, IE_2, IE_3, \dots$) of an isolated atom always strictly increase. Which of the following massive jumps in successive $IE$ strongly indicate the specific valence shell configuration of the corresponding atom?

Prashant Kotian · Accepted Answer

Correct answer: A,B,C. A massive spike in IE occurs when an electron is removed from a stable, fully filled inner noble gas core. If the jump occurs after the 1st electron (), the atom had 1 valence electron (Group 1). If after the 2nd (), it had 2 (Group 2). If after the 3rd (), it had 3 (Group 13). Halogens have 7 valence electrons, so their jump would be after .

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