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Barium, atomic structure

Barium, atomic structure

C045/6400

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53.2 MB (2.5 MB compressed)

4800 x 3872 pixels

40.6 x 32.8 cm ⏐ 16.0 x 12.9 in (300dpi)

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Credit

CARLOS CLARIVAN / SCIENCE PHOTO LIBRARY CARLOS CLARIVAN / SCIENCE PHOTO LIBRARY

Caption

Diagram of the nuclear composition, electron configuration, and valence orbitals of an atom of barium-137 (atomic number: 56), an isotope of this element. The nucleus consists of 56 protons (blue) and 81 neutrons (red). The stability of an element's outer (valence) electrons determines its chemical and physical properties. Barium is an alkaline earth metal in group 2, period 6, and the s-block of the periodic table. It is extremely reactive and burns with a green flame. Barium compounds are used as X-ray contrast mediums for the digestive system.

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Model release not required. Property release not required.

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