Taking the Bohr radius as a 0 = 53pm, the radius of Li ++ ion in its ground state, on the basis of Bohr’s model, will be about

Question

Philoid · Accepted Answer

As we know that the radius of an atom in its ground state is given by the formula where a₀ is Bohr’s radius, and Z is atomic number.

Now just putting the values in above formula, we have

a₀ = 53pm and also we know the atomic number of lithium is 3.

Hence rpm ≈ 18pm.

Therefore option (c) is correct.