Question

Which of the following species has the highest ionization potential ?

• A. Ne
• B. $Al^+$
• C. $Mg^+$
• D. $Li^+$

Answer 1

Answer: (D)

$Li^+$

Answer 2

Both Ne and $Li^+$ have noble gas configurations. Out of these two $Li^+$ will have more ionisation potential due to smaller size and more nuclear charge per electron.