Calculate the speed of the electron in n=2 orbit of `Li^(+ +)`ion.

Explanation

To calculate the speed of the electron in the n=2 orbit of the \( Li^{++} \) ion, we will use Bohr's formula for the speed of an electron in a given orbit:

\[ v_n = 2.188 \times 10^6 \frac{Z}{n} \text{ m/s} \]

### Step-by-Step Solution:

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