Question

What is the value of electron gain enthalpy of $Na^+$ if $IE_1$ of $Na = 5.1 \,eV$ ?

• A. -5.1 eV
• B. -10.2 eV
• C. #ERROR!
• D. #ERROR!

Answer 1

Answer: (A)

-5.1 eV

Answer 2

$IE_1$ of $Na = -$ Electron gain enthalpy of $Na^+$ ion $= -5.1\,eV.$