Atomic StructureHard
Question
Electromagnetic radiations of wavelength 242 nm is just sufficient to ionise Sodium atom. Then the ionisation energy of Sodium in kJ mole-1 is.
Options
A.494.65
B.400
C.247
D.600
Solution
I.E. of one sodium atom = 
& I.E. of one mole Na atom =
NA = 
= 494.65 kJ.mol.
& I.E. of one mole Na atom =
NA = = 494.65 kJ.mol.Create a free account to view solution
View Solution FreeMore Atomic Structure Questions
If the nitrogen atom had electronic configuration 1s7, it word have energy lower than that of the normal ground state co...What is the angular speed of an electron revolving in the third orbit of He+ ion?...The speed of electron revolving around H-nucleus is 0.547 × 106 m/s. The distance of electron from the nucleus is...The difference between the wave number of 1st line of Balmer series and last line of paschen series for Li2+ ion is :...As the orbit number increases, the K.E. and P.E. for an electron...