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Chapter 3: Problem 7
Direction for questions: State whether the following statements are true or false. In iron, the differentiating electron enters into the orbital of a penultimate shell.
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For each of the questions, four choices have been provided. Select the correct alternative. Heisenberg's uncertainty principle is not applicable to (a) all the bodies moving with high speed (b) protons (c) electrons (d) all the microparticles moving with high speed
Match the entries given in column A with appropriate ones from column B. $$ \begin{array}{|l|ll|l|l|} {\text { Column A }} & {\text { Column B }} \\ \hline \text { A. } & \text { Be } & (\cdot) & \text { a. } & {[\mathrm{He}] 2 \mathrm{~s}^{2} 2 \mathrm{p}^{6}} \\ \hline \text { B. } & \mathrm{Ne} & (\cdot) & \text { b. } & {[\mathrm{He}] 2 \mathrm{~s}^{2}} \\ \hline \text { C. } & \text { Si } & (\cdot) & \text { c. } & {[\mathrm{Ne}] 3 s^{2} 3 \mathrm{p}^{3}} \\ \hline \text { D. } & \mathrm{P} & (\cdot) & \text { d. } & {[\mathrm{Ne}] 3 s^{2} 3 \mathrm{p}^{5}} \\ \hline \text { E. } & \text { Cl } & (\cdot) & \text { e. } & {[\mathrm{Ne}] 3 s^{2} 3 \mathrm{p}^{2}} \\ \hline \end{array} $$
For each of the questions, four choices have been provided. Select the correct alternative. Discoveries of isotopes and isobars contradict some of the postulates of _________ atomic theory. (a) Bohr's (b) Dalton's (c) Rutherford's (d) Thomson's
For each of the questions, four choices have been provided. Select the correct alternative. The difference between the angular momentum of two orbits of \(\mathrm{He}^{+2}\) is \(\frac{2 \mathrm{~h}}{\pi} .\) The energy of an electron present in the higher orbit is \(-1.51 \mathrm{eV}\). Identify the lower orbit. (a) 1 (b) 2 (c) 3 (d) 4
For each of the questions, four choices have been provided. Select the correct alternative. The Bohr's model could successfully explain (a) the stability of the atom (b) the atomic spectra of hydrogen atom (c) the calculation of energy of the electron in a particular orbit of hydrogen atom (d) all the above
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