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Structure of Atom question bank (Chemistry)

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Q1.

Consider two radiations of wavelengths

The ratio of the energies of these two radiations $\left(\dfrac{E_1}{E_2}\right)$ is ________ (Nearest integer).

(A)

$\lambda_1 = 2000$ Å

(B)

$\lambda_2 = 6000$ Å

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Q2.

The Bohr radius of a hydrogen like species is $70.53$ pm. The species and the stationary state $(n)$ are respectively (Given : Hydrogen atom Bohr radius is $52.9$ pm)

(A)

$\text{Li}^{2+}, 3$

(B)

$\text{He}^+, 3$

(C)

$\text{He}^+, 2$

(D)

$\text{Li}^{2+}, 2$

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