HomeLink Parent Portal is available for all MDUSD students and legal guardians. There are a variety of reasons to have a HomeLink Parent Portal account, and some of the benefits include the ability to check student grades (Middle & High Schools only), test scores, attendance, as well as other contact and registration features. 2.
When present in compounds barium exists usually in the Ba 2+ , divalent state. Barium dissolves in most aqueous acids except sulfuric acid, due to the formation of an insoluble protective layer of barium sulfate.
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].6s2 and the term symbol of Barium is 1S0. 1  Pauling electronegativity: 0.89 (Pauling units)  First ionisation energy: 502.9 kJ molâ1.