A d1 octahedral complex is found to absorb visible light, with the absorption maximum occurring at 509 nm. calculate the crystal-field splitting energy, δ , in kj/mol.

For lesson: cameras, plant presses, newspaper, paper towels, clip boards, pencils, calculators, field guides, metric measuring tapes, paper, transect squares, colored pencils, ph meters, light meters, computers, etc.for extension: baggies for soil samples collecting, distilled water, hand shovels, beakers, boiled rice, microscopes, well microscope slides or regular microscope slides with cover slips

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The correct answer is:   [c]:     "it is the minimum amount of material needed to sustain a fission  reaction."