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.
WASHINGTON â President Obama said Sunday that the clock starts ticking Jan. 20 on a six-month nuclear deal with Iran, calling it the best bet to deny Tehran the means to make nuclear weapons.bama: Iran nuclear deal starts Jan. 20. President Obama said Sunday the clock starts ticking Jan. 20 on a six-month nuclear deal with Iran, calling it the best bet to eliminate the prospect that Tehran will make nuclear weapons. I have no illusions.