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We develop a straightforward method to compute charge radii and quadrupolemoments for baryons both with and without strangeness, when the number of QCDcolor charges is N_c. The minimal assumption of the single-photon exchangeansatz implies that only two operators are required to describe these baryonobservables. Our results are presented so that SU(3) flavor and isospinsymmetry breaking can be introduced according to any desired specification,although we also present results obtained from two patterns suggested by thequark model with gluon exchange interactions. The method also permits toextract a number of model-independent relations; a sample is r^2_Lambda / r_n^2= 3/(N_c+3), independent of SU(3) symmetry breaking.Comment: 30 pages, no figures, REVTeX

physical review. d. particles, fields, gravitation, and cosmology/physical review. d. particles and fields

Baryon charge radii and quadrupole moments in the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mn>1</mml:mn><mml:mo>/</mml:mo><mml:mi>N</mml:mi></mml:mrow><mml:mrow><mml:mi>c</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math>expansion: The 3-flavor case

Baryon charge radii and quadrupole moments in the1/Ncexpansion: The 3-flavor case