Isomerism is the phenomenon whereby certain compounds, with the same molecular formula, exist in different forms owing to their different organisations of atoms. The concept of isomerism illustrates the fundamental importance of molecular structure and shape in organic chemistry.
By signing the nuclear deal, Iran has given up that nuclear umbrella for as long as two decades and made the case for the United States to further strengthen the conventional military capacities of Israel and the GCC.
An agreement between Iran and the countries it is negotiating with â the United States, Britain, France, Germany, Russia and China â would not be a formal treaty, and thus would not require a two-thirds vote of the Senate.n agreement between Iran and the countries it is negotiating with â the United States, Britain, France, Germany, Russia and China â would not be a formal treaty, and thus would not require a two-thirds vote of the Senate.