Calculate the energy required to remove an electron from He+ ion. [Ans: 54.4 eV]
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Explanation:
The atoms with the missing or additional electrons are called ions. He II is a helium (chemical element symbol He) atom that misses one electron. Normal, neutral helium atoms that still have both electrons are called He I. These ions emit ultraviolet (EUV) extreme radiation at 30.4 nm (304 Å) wavelength.
The energy required to remove an electron from singly ionized helium atom will be
En = (13.6) ×2²
En = 54.4
Thus, the energy required to remove an electron from He+ ion is 54.4eV
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