KVPY 2020-21 SA Exam Previous Papers

Question : 45 of 80

Marks: +1, -0

The first ionization potential (IP) of the elements Na, Mg, Si, P, Cl and Ar are 5.14, 7.65, 8.15, 10.49, 12.97 and 15.76 eV, respectively. The IP (in eV) of K is closest to: