Francium: An Element On The Periodic Table

Fluorine is an element that reacts with minerals in the earth to create a salt. The salt is often naturally occurring in nature and is found in very small amounts in urban and rural wells. Although it is

I am the epitome of a crazy cat lady. Don’t take me to a humane society, it will end with me attempting to smuggle out a cat, and getting caught because...well, stealing cats is apparently frowned upon in society. Yes, I am unhealthily obsessed; I love my cat more than Iove my best friend, more than my sister, and on some days, I love him more than I love my parents.

chemical element here on our own planet Earth. Though it is a rare, unreactive noble gas,

we had tiger the cat he was a tom cat, when we moved to this house I was in Kindergarden we couldn't find him. Here the owners left Regan a big ol German Shepard, I turned his dog house into a club house (he was that big) once he ran away.. he scared me too cause he'd growl when I'd try to pet him (while he was eating).

only four exist in nature. The most stable isotope is radium 226, and it has a half-life of 1600

The periodic table is a table that categorises and displays all of the chemical elements. It is made up of groups, periods and blocks. A group (also referred to as a family) are the columns of elements, there are 8 groups. The elements in each family have similar but not identical properties and they all have the same number of outer electrons. E.g. lithium (Li), sodium (Na), potassium (K) are all soft, white, shiny metals because they are all members of group 1. A period is each horizontal row of elements, there are 7 periods. In a period, the elements are not alike in properties, the first element in a period is always an extremely active solid, and the last element in a period is always an inactive gas. Properties change greatly across a given row. Each new period represents the next shell which electrons fill. A block is a region of the periodic, there are 4 blocks: S, D, P and F.

Does the little known element bromine affect the globe so much to the point that without it, human life would cease to exist? The answer could be surprising. bromine is a natural, liquid at room temperature element that belongs to the group Halogen, which includes similar elements such as chlorine, iodine, and astatine. It is an extremely poisonous element that could cause long-term kidney and brain issues from its systematic poisoning effect; the element bromine is a reddish-brown color and exceedingly fetid. Though it was originated from a college student’s work, a French scientist wrote an article about bromine before the student could pursue it. No matter how it was discovered, scientists are grateful for it.

The name of my element is carbon. Its symbol is the letter “C” and its atomic number is 6. Its atomic mass is 12.0107. Carbon’s abundance on the earth’s crust is 200 parts per million by weight and 344 parts per million by moles. You can buy 100g of carbon for $2.40.

(1) Lanthanides are extremely interesting, and sometimes rather difficult to study. “Their buried electrons cause the lanthanides to clump together in frustrating ways.” (4) Despite their faults, life as it is today would not be the same without them. Although called a “rare-earth” element, in truth, lanthanum is the 28th most abundant, being as common as lead and tin together. (1) In fact, currently known reserves of lanthanum are known to be around 6 million tonnes. (1) (A tonne, also known as a metric ton, is a unit of mass equaling 1,000 kilograms. (5) According to Emesly, although there are no ores which contain only lanthanum as the metal component; it is found in minerals that include all the other rare-earth elements. Rare-earth ores actually contain a lot of lanthanum; monazite has around 25% lanthanum.  Interestingly, the metal itself is obtained by the reaction of lanthanum fluoride and calcium metal. Lanthanum metal is silvery-white, soft enough to cut with a knife, tarnishes rapidly in air, and burns easily if ignited. It is also one of the most reactive of the rare-earth metals; it even reacts with water, releasing hydrogen gas. Lanthanum has an extremely high melting point of 921 degrees Celsius and an even higher boiling point of 3,460 degrees Celsius. Additionally, it has a density of 6.1 kg per liter (6.1g per cubic centimeter)

She turned and strutted across the living room floor with her prissy little nose stuck up in the air. She acts as if she is God’s gift to the cat world. I wonder if all calicos are as mean as Miss Kitty is.

Scientists at the Join Institute of Nuclear Research in Dubna, Russia and scientists at the Lawrence Livermore National Laboratory in California discovered element 117 or, tennessine, in 2010. With an atomic mass/weight of 294 making it the second heaviest element known to mankind behind element 118 or, Oganesson. Before being named tennessine by the International Union of Pure and Applied Chemistry (IUPAC) in 2016, tennessine had the place holder name of ununseptium, which means one-one-seven in Latin. Tennessine was created by fusing berkelium-249 atoms with calcium ions until tennessine atoms formed. Since tennessine is radioactive, it has zero stable isotopes. Tennessine’s most stable isotope, however, is tennessine, which has a half-life of about 80 milliseconds. Only six atoms of tennessine have been artificially created to this day.

Fluorine hits its boiling point at -188°C and hits its melting point at -219.6°C (“Lenntech”). It is thermally conductive, but not electrically conductive (“Rsc”). Fluorine has a density of 0.001696 g/cm cubed at -20°C (“Chemicool”). Due to being a gas, fluorine has no ductility, hardness, or malleability. Fluorine only has one stable naturally occurring isotope, 19F, which in turn has a natural abundance of 100% (“Rsc”). None of its eleven other known isotopes occur naturally, or are stable enough.

The feature of fluorine has delayed to develop since it has a feature of reactivity that eats away the normal react container. This has paused on a development of discovery of fluorine but during the WW2 (1939-1945), America begun to deal a huge quantities of uranium trifluoride in order to develop the atomic bomb. From this point, the fluorine started to develop rapidly than the period time when it has no commercial productions of

I love my cat to death but she can be the real meanest cat you have met. When she plays with cat nip or you get on her nerves she goes crazy. That's when you really gotta watch out for the scratching or tripping. She has a scratching pad kind of thing that she likes to scratch on and this includes cat nip. Sometimes, you can walk by this while she is laying on it and she scratches your

This is what led Curie to take Becquerel’s work a few steps further and conduct her own experiments on uranium rays. She discovered that the rays were constant no matter what form or condition of the uranium. She theorized the rays came from the atomic structure. This idea was revolutionary and created its own field in science, known as the atomic physics, this is when Marie coined the word “radioactivity” to describe the phenomena. Even when they had their first daughter Irene in 1897 there work did not slow. Pierre then stopped his own studies to help Marie with her new discovery of radioactivity. In 1898 they discovered a new radioactive element. They named it polonium after Marie’s native country, Poland. They detected the presence of another radioactive element and called this radium. In 1902 they had extracted pure radium to prove its existence as a unique chemical element.