2I+1)^{-1/2} ~ \langle II 20 | II \rangle ~\langle I || E2 || I \rangle \ .
\end{eqnarray}
 -->
<TABLE CLASS="equation" WIDTH="100%">
<TR VALIGN="MIDDLE"><TD NOWRAP ALIGN="RIGHT"><IMG
 STYLE=""
 SRC="img125.svg"
 ALT="$\displaystyle Q_2 = \sqrt {{16 \pi} /5} ~ (2I+1)^{-1/2} ~ \langle II 20 \vert II \rangle ~\langle I \vert\vert E2 \vert\vert I \rangle \ .$"></TD>
<TD>&nbsp;</TD>
<TD>&nbsp;</TD>
<TD CLASS="eqno" WIDTH=10 ALIGN="RIGHT">
(<SPAN CLASS="arabic">6</SPAN>)</TD></TR>
</TABLE></DIV>
The intrinsic an