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.
The annual production of Barium is estimated to be about 6 million tons. It is the 14th most common element in the earth's crust, making up only about 0.0425% of the earth's crust. [8] However, high concentrations of Barium are found only in certain soils and food products.t is the 14th most common element in the earth's crust, making up only about 0.0425% of the earth's crust. [8] However, high concentrations of Barium are found only in certain soils and food products.