The proton-neutron interacting-boson model (IBA-2) is used to predict the (e,e') form factor for collective 1⁺ excitation in ^130,132,134Ba. A simple estimate of the ¹³⁰Ba transition current density, and thence of the form factor, is obtained from the known form factor of ¹⁶⁴Dy by a scaling method built on PWBA and Fourier-Bessel analysis. A weightier prediction is obtained from microscopic boson structure and DWBA. The 1⁺ excitation should be observable in the bariums. Boson g factors are calculated.