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Chapter 6: Q61E (page 337)
Question:Which atom would be expected to have a half-filled 4ssubshell?
Potassium is expected to have a half-filled 4s subshell.
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Question: State the Heisenberg uncertainty principle. Describe briefly what the principle implies.
Question:Consider the orbitals shown here in the outline.
(a) What is the maximum number of electrons contained in an orbital of type (x)? Of type (y)? Of type (z)?
(b) How many orbitals of type (x) are found in a shell withn= 2? How many of type (y)? How many of type (z)?
(c) Write a set of quantum numbers for an electron in an orbital of type (x) in a shell withn= 4. Of an orbital of type
(y) in a shell withn= 2. Of an orbital of type (z) in a shell withn= 3.
(d) What is the smallest possiblenvalue for an orbital of type (x)? Of type (y)? Of type (z)?
(e) What are the possiblelandmlvalues for an orbital of type (x)? Of type (y)? Of type (z)?
How are the Bohr model and the quantum mechanical model of the hydrogen atom similar? How are they
different?
Which atom and/or ion is (are) isoelectronic with\(\begin{aligned}{{}{}}{{\bf{B}}{{\bf{r}}^ + }:{\rm{ }}{\bf{S}}{{\bf{e}}^{{\bf{2}} + }},{\rm{ }}{\bf{Se}},{\rm{ }}{\bf{A}}{{\bf{s}}^--},{\rm{ }}{\bf{Kr}},{\rm{ }}{\bf{G}}{{\bf{a}}^{{\bf{3}} + }},{\rm{ }}{\bf{C}}{{\bf{l}}^--}?}\\\;\end{aligned}\)
The ionic radii of the ions \({{\bf{S}}^{{\bf{2}}-}},{\rm{ }}{\bf{C}}{{\bf{l}}^-},{\rm{ }}{\bf{and}}{\rm{ }}{{\bf{K}}^ + }\) are 184, 181, 138 pm respectively. Explain why these ions havedifferent sizes even though they contain the same number of electrons.
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