French Revolution Timeline May 5, 1789 A meeting of the Estates-General is called by Louis XVI in Versailles to discuss and approve a new tax plan. June 17, 1789 Three Poitevin cures decide to join the Third Estate, leaving the Chambers of the Clergy.
Helium is a chemical element with symbol He and atomic number 2. It is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas that heads the noble gas group in the periodic table. Its boiling and melting points are the lowest among all the elements.
'acid former'. Isotopes: Nine isotopes of oxygen are known. Natural oxygen is a mixture of three isotopes. Properties: Oxygen gas is colorless, odorless, and tasteless. The liquid and solid forms are a pale blue color and are strongly paramagnetic.Oxygen supports combustion, combines with most elements, and is a component of hundreds of thousands of organic compounds.acid former'. Isotopes: Nine isotopes of oxygen are known. Natural oxygen is a mixture of three isotopes. Properties: Oxygen gas is colorless, odorless, and tasteless. The liquid and solid forms are a pale blue color and are strongly paramagnetic.