Modern Physics> ionisation-energy-of-helium-atom...

The ionisation energy of hydrogen atom is 13.6 eV, the ionisation energy of helium atom would be

(a) 13.6eV

(b) 27.2eV

(c) 6.8eV

(d) 54.4eV

Simran Bhatia , 12 Years ago

Grade 11

3 Answers

Amit Saxena

(d)

E propoertional Z² and Z for helium = 2

:. (E)_He = 4 × 13.6 = 54.4 eV

Last Activity: 12 Years ago

Kamaljit

First Ionisation potential (energy) of He is ~2372 kJ/mol ~ 24 eV (the highest among all the elements) while the second IP is (calculated from Bohr theory) ~5250 kJ/mol ~ 54 eV.

Last Activity: 8 Years ago

Abhay

AsE=(13.6ev Z^2)÷n^2Atomic weigh of helium is 4E=13.6×4=54.4 Thanks for seen🙌🙋................

Last Activity: 8 Years ago

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Modern Physics> ionisation-energy-of-helium-atom...

The ionisation energy of hydrogen atom is 13.6 eV, the ionisation energy of helium atom would be (a) 13.6eV (b) 27.2eV (c) 6.8eV (d) 54.4eV

Simran Bhatia , 12 Years ago

Amit Saxena

Kamaljit

Abhay

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