(a)
Interpretation:
The energies in kJ/mol for four lowest energy levels of the
Concept introduction: Bohr’s theory of atoms was applicable to the one electron system. It purposed the energy levels in an atom. It purposed the mathematical relation for the calculation of the radius of orbits, energy and velocity of electrons.
(a)
Answer to Problem 1ASA
Explanation of Solution
The
Thus, the electronic configuration must be=
For the first four energy levels, the value of
(b)
Interpretation: The energies for the transition from n=2 to n=1 level for
Concept introduction: Bohr’s theory of atoms was applicable to the one electron system. It purposed the energy levels in an atom. It purposed the mathematical relation for the calculation of the radius of orbits, energy and velocity of electrons.
(b)
Answer to Problem 1ASA
Explanation of Solution
The atomic number of Beryllium = 4
Thus, the electronic configuration must be=
For the first four energy levels, the value of
The energies for the transition from n = 2 to n = 1 level for
The wavelength will be:
(c)
Interpretation: The quantum number of the initial and final states for the transition of given three wavelengths
Concept introduction: Bohr’s theory of atoms was applicable to the one electron system. It purposed the energy levels in an atom. It purposed the mathematical relation for the calculation of the radius of orbits, energy and velocity of electrons.
(c)
Answer to Problem 1ASA
a) 4 → 1 b) 3 → 1 c) 4 → 3
Explanation of Solution
Calculate energy fir the given three wavelengths
From the part (a):
Thus, the difference in
Hence the
The difference in
The difference in
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Chapter 11 Solutions
EBK CHEMICAL PRINCIPLES IN THE LABORATO
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- The reaction of quicklime, CaO, with water produces slaked lime, Ca(OH)2, which is widely used in the construction industry to make mortar and plaster. The reaction of quicklime and water is highly exothermic: CaO(s)+H2O(l)Ca(OH)2(s)H=350kJmol1 (a) What is the enthalpy of reaction per gram of quicklime that reacts?. (b) How much heat, in kilojoules, is associated with the production of 1 ton of slaked lime?arrow_forwardThe enthalpy change for the following reaction is 393.5 kJ. C(s,graphite)+O2(g)CO2(g) (a) Is energy released from or absorbed by the system in this reaction? (b) What quantities of reactants and products are assumed? (c) Predict the enthalpy change observed when 3.00 g carbon burns in an excess of oxygen.arrow_forwardThe first step in the preparation of lead from its ore (galena, PbS) consists of roasting the ore. PbS(s)+32O2(g)SO2(g)+PbO(s) Calculate the standard enthalpy change for this reaction, using enthalpies of formation (see Appendix C).arrow_forward
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