In 1919, the name was changed to the Elmhurst Academy and Junior College, and the expanded curriculum included courses in public speaking, physical education, economics, psychology, and the history of education. In 1924, the school was renamed Elmhurst College and became a four-year college for men. The college seal was designed in the 1920s by Robert Leonhardt, first registrar of the College, who also served as coach of the football team. Women first enrolled in 1930, and four years later, the college was accredited.
The family name is 2A or IIA. (Answer Improvement) 2A is really the same thing as group 2 above in the question. The family name for this group is alkaline earth metals. The family name is 2A or IIA. (Answer Improvement) 2A is really the same thing as group 2 above in the question.
Tributyltin (TBT) is an umbrella term for a class of organotin compounds which contain the (C 4 H 9) 3 Sn group, with a prominent example being tributyltin oxide. For 40 years TBT was used as a biocide in anti-fouling paint, commonly known as bottom paint, which was applied to the hulls of ocean going vessles.BT compounds are organotin compounds, with 3 butyl groups covalently bonded to a tin(IV) centre. A general formula for these compounds is (n-C 4 H 9) 3 Sn-X. The X group is typically an electronegative leaving group such as chloride or carboxylate ..