Period 5 element

Chlorine is an element that consists of 17 protons, an average of 18.5 neutrons and 17 electrons. It has an atomic number of 17, and an average nuclear charge of 35.5. There are 2 isotopes of chlorine that are 35Cl and 37Cl. 35Cl has an atomic mass of 35 and a natural abundance of 75%. 37Cl has an atomic mass of 37 and a natural abundance of 25%. The average atomic mass or nuclear charge equates to 35.5. Both of the isotopes have the same atomic number. (BBC Bitesize. Atoms and the periodic…

table of elements” on the base of periodic repetition of properties. In 1864, before Mendeleev, and John Newlands arranged the elements in order of atomic mass where every eight elements has similar properties. He called the relationship “the law of octaves”. Even so, this law could not be applied for the elements beyond Calcium, so it was not accepted by the scientific community. The modern periodic table is thought to be the outermost ground-state electron configuration of the elements. The…

heated the mineral pyrolusite (MnO2) and in the presence of charcoal, found element 25, manganese in the year 1774. This silvery-metallic element has an atomic mass of 54.938049 rounded to 55 with 7 valence electrons. Manganese is a transition metal in group 7, period 4. Manganese is very flammable and dangerous with very strong intensity! It’s found in the earth’s mantle while having a melting point of 1246℉. The element manganese stimulates functions of the human body and resembles iron while…

Tin is a Chemical element its symbol is Sn. Its location on the periodic table of elements is period 5 group 14. Its atomic number is 50 and the atomic weight is 118.71. It has 50 protons, 50 electrons, and 69 neutrons. Tin is a solid, ductile, malleable, silvery-white metal. Tin melts at a low temperature of about 232 °C (450 °F). Tin resists corrosion from water, but can be attacked by acids. Around 5000 years ago, humans first began mining and incorporating tin with copper to create bronze…

Looking at the period table, there are many elements, but Magnesium is the one needed for or enzymes to function properly. In addition to this, Magnesium has other roles to play in one’s daily life. In fact, the element is the eighth most prominent in the earth’s crust, but it isn’t a free metal. Thankfully, there are numerous minerals in Magnesium. Two of the most common minerals are dolomite and magnesite. These minerals and the element itself can be discovered in sea water. Saying this, come…

Robert Crowley Mr. Scott Period 3 October 30th 2015 Chemistry Introduction and Overview Elements are the substances that make up everything in the universe, known and unknown. This means that elements are what make up matter, and everything you see, hear and touch. There are 118 elements known to man, some that you may know include gold, iron and oxygen. Each of these have distinguishing qualities and they come in 3 different states of matter, solid, liquid and gas. Some of these are…

took off, with his recognized talent Michael Jackson and the Jacksons became very famous. It wasn’t just Michael who was noticed at that time but his siblings as well they all pursued their own successful career paths, they are known as the Jackson 5. Michael Jackson’s career went to another level when he branched on his own and started making his own music while adding other talents to his career, dancing. “Black or White” is one of Michael’s biggest music hits that gathered everybody’s…

Norman Greenbaum Norman Greenbaum is best known for his song, “Spirit in the Sky” the song was written and released in 1969 and reached number three on the top 100 rock songs in the year of 1970. Norman Greenbaum wrote many songs but “Spirit in the Sky” was the most popular off all, being his first and only hit throughout the decades. Norman Greenbaum’s album is also named spirit in the sky, it was released after the hit single “Spirit in the Sky”. The album included songs such as “Canned Ham”…

Alyssa woke up and found out her parents had left early for work. They promised her that her lunch would be prepared by them but that did not happen. Panic mode began and scrambled around to make her lunch. She quickly grabbed an avocado, a banana, some milk and threw it in the blender. While keeping one hand on the blender, she was trying to reciting the poem for French class. Once her smoothie was made, she shuffled through the drawer found a bottle and filled it up. She grabbed her bag and…

Entry 14: This entry will focus on the scandals associated with stardom, and will transition into a deeper focus on Michael Jackson. Stars have two selves that are developed and manipulated over time. They have the ego-ideal and the ideal-ego. Each encompassing a different mindset and goal. The ideal ego is what is portrayed to the media ideally. There is a certain persona that is expected of stars and this ideal-ego is supposed to achieve that. For example, Britney Spears experienced a…