Image: Halliburton. Downhole camera technology puts eyes underground, enhancing a company's understanding of what is going on within the furthest depths of production and helping operators make important decisions that benefit from the all too valuable sense of sight.
Barium was discovered by Sir Humphrey Davy at 1808 in England. Origin of name: from the Greek word barys meaning heavy Baryta (barium oxide, BaO) was distinguished from lime (calcium oxide, CaO) by Scheele in 1774.
Barium: orbital properties. Barium atoms have 56 electrons and the shell structure is 2.8.18.18.8.2. The ground state electronic configuration of neutral Barium is [ Xe ]. 6s 2 and the term symbol of Barium is 1 S 0. 1  Pauling electronegativity: 0.89 (Pauling units). 2  First ionisation energy: 502.9 kJ mol â1. 3  Second ionisation energy: 965.2 kJ mol â1.