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<p>Question 20.31 asks you about radial and angular nodes. To
answer this you must know which quantum numbers correspond to
which atomic orbitals.</p>
<p><br>
</p>
<p>The number of radial nodes is given by <img alt="$n-l-1$"
style="vertical-align: middle;"
src="cid:part1.969DC270.08F90F54@mercer.edu">. The number of
angular nodes is given by the quantum number <img alt="$l$"
style="vertical-align: middle;"
src="cid:part2.30EBAE2E.1347C23A@mercer.edu">.</p>
<p><br>
</p>
<p>So, a <img alt="$\psi_{2p_x}$" style="vertical-align: middle;"
src="cid:part3.42AD94FB.BA71367C@mercer.edu"> atomic orbital (<img
alt="$n=2,l=1$" style="vertical-align: middle;"
src="cid:part4.05CD069A.170863D6@mercer.edu">) has 0 radial
nodes and 1 angular node. </p>
<p><br>
</p>
<pre class="moz-signature" cols="72">--
Andrew J. Pounds, Ph.D. (<a class="moz-txt-link-abbreviated" href="mailto:pounds_aj@mercer.edu">pounds_aj@mercer.edu</a>)
Professor of Chemistry and Computer Science
Mercer University, Macon, GA 31207 (478) 301-5627
<a class="moz-txt-link-freetext" href="http://faculty.mercer.edu/pounds_aj">http://faculty.mercer.edu/pounds_aj</a>
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