How many electrons are present in 1^2H ,2He and He^+? Which of these are hydrogen-like species?
How many electrons are present in \(_1^2H\),2He and He+? Which of these are hydrogen-like species?
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Hydrogen-like species contain only one electron.
Consider \(_1^2H\) :
Number of protons = Number of electrons = 1
Consider 2He :
Number of protons = Number of electrons = 2
Consider He+ :
Number of electrons = (Number of electrons in He – 1) = 2 – 1 = 1
Thus,
\(_1^2H\) and He+ are hydrogen-like species.
[Note : Bohr’s theory is applicable to hydrogen atom and hydrogen-like species, which contain only one electron.]
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