MCQ
The ionization potential for second He electron is......$eV$
  • A
    $13.6$
  • B
    $27.2 $
  • $54.4$
  • D
    $100$

Answer

Correct option: C.
$54.4$
c
(c) For the ionization of second $He$ electron. will act as hydrogen like atom.
Hence ionization potential
$={{Z}^{2}}\times 13.6\,volt={{(2)}^{2}}\times 13.6=54.4\,V$

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