# Radii of orbits in $He^{2+}$

#### WMDhamnekar

Is it possible to calculate the radii of orbits in $He^{2+}$ using Bohr's equation?

Answer: It is not possible to compute radii of orbits in $$\displaystyle He^{2+}$$ formed positively charged ions(cations) resulting from the loss off the $1s^2$ electrons
$$\displaystyle He(1s^2)\rightarrow He^{2+}+(2e^{-})$$

I don't know if I am right or wrong. If any member want to express his answer may reply.

#### topsquark

Forum Staff
I think you are on the right track, but I'd state it differently. $$\displaystyle \text{He} ^{2+}$$ has no electrons so how could there be an orbit?

Is it possible they were looking for the Bohr radius of $$\displaystyle \text{He} ^+$$ and there's a typo?

-Dan

#### WMDhamnekar

I think you are on the right track, but I'd state it differently. $$\displaystyle \text{He} ^{2+}$$ has no electrons so how could there be an orbit?

Is it possible they were looking for the Bohr radius of $$\displaystyle \text{He} ^+$$ and there's a typo?

-Dan
Hello,

It's not a typo, it is foxy question, just to test the reader's prudence.

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