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.
Six world powers adopt nuclear deal with Iran. Aims for decade-long cap of nuclear work; Israel united in opposition; historic agreement sent to Congress; Obama, Rouhani hail cooperation.. Secretary Kerry Poses for a Group Photo With Fellow EU, P5+1 Foreign Ministers and Iranian Foreign Minister Zarif After Reaching Iran Nuclear Deal.