The radius of 2nd orbit of He+ of Bohr’s model is r1 and that of fourth orbit of Be3+ is represented as r2. Now the ratio r2r1 is x : 1. The value of x is _____.

r∝n2zrrBe∝(4)24rHe∝(2)22rBerHe=2

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The radius of 2^nd orbit of He⁺ of Bohr’s model is r₁ and that of fourth orbit of Be³⁺ is represented as r₂. Now the ratio $\frac{r_{2}}{r_{1}}$ is x : 1. The value of x is _____.

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answer is 2.

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$r \propto \frac{n^{2}}{z} r$

$r_{B e} \propto \frac{{(4)}^{2}}{4}$

$r_{He} \propto \frac{{(2)}^{2}}{2}$

$\frac{r_{Be}}{r_{He}} = 2$

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