Electron configuration

anti-corrosive properties and is used a lot in zinc galvanizing. It is often combined with other metals to form materials that are used in cars, household fixtures, and electrical components. Zincs atomic number is 30, its atomic mass is 65.38 and its electron configuration is 1s22s22p63s23p63d104s2 and is sometimes written as [Ar] 3d10 4s2. Zinc is essential to everyday life as it prolongs the life of steel used in houses, bridges, energy lines, telecommunications and transport while also…

History of Atomic Absorption Spectroscopy (AAS) Atomic Absorption Spectroscopy (AAS) was first proposed by Alan Walsh, later known as Sir Alan in 1955. Sir Alan worked in Melbourne for the Commonwealth Scientific and Industrial Research Organization (C.S.I.R.O.). This concept came to Alan Walsh in a flash of inspiration as he was gardening at his Melbourne home. This led to the invention that has since been labelled as one of the most significant achievements in chemical analysis for last…

Write an essay on the structure of proteins, emphasising the forces that sustain their three dimensional structures. Introduction MORE Proteins are nitrogenous organic macromolecules constructed from a base sequence of 20 amino acids at the ribosome in cells. There are over 100,000 different proteins encoded by thousands of different genes within the human body. They all perform different functions e.g. antibodies providing immunity and enzymes catalysing metabolic reactions. The…

played a major role in the lives of others who are where we want to be. Me and the other scholars did not seek help primarily from the higher-ups, but from fellow peers. Whether a math problem, biological cycle (the Calvin Cycle fried my mind), electron configuration, or writing practice, we always had each other’s backs, because we all know our final goals and how hard it is for people like us to get…

Presumably your self-awareness begins at conception, and thus there is self-awareness even at the cellular level. Now if you, and here 'you' could be a plant or a microbe, respond to stimuli (external or internal), then you are self-aware, albeit awareness of self comes in degrees - a mammal is more self-aware than a cactus even though both can respond to stimuli. If you respond to stimuli in a way that's not predictable by the laws of physics then you are self-aware. A rock cannot be a 'you'…

The surface morphology was investigated using a transmission electron microscopy (TEM, JEM- 2100F, JEOL Co., Japan). Laser diffraction (LD) analyzer (SALD- 2300, Shimadzu Co., Japan) was used to determine particle size of the synthesized iron particles after 30 min of ultra-sonication (US-101, SND Co, Ltd, Japan)…

bonded to a single oxygen atom. Oxygen atom can accept two electrons to attain stable octet shell configuration, and the two hydrogen atoms with 1 electron each can share them with the electron deficient oxygen atom through O-H bonds. Greater affinity of oxygen for electrons makes it partially negatively charged, and the hydrogen atoms attain a partial positive charge i.e. water molecule is polar (Shakashiri, 2011). Concentration of electrons on oxygen bend the O-H bonds, and H2O molecule…

After deprotonation of 6.8 mmol naphthalen-2-ol by 14.0 mmol NaOH, the resulting anion was placed together with 8.8 mmol 1-iodobutane, and the reaction was performed by reflux in 20 mL of ethanol (EtOH) solvent, and the product was allowed to cool on ice and collected by suction filtration. The final crystals had a very pale amber color and were odorless. The following week, after being allowed to completely dry for a week at room temperature, the IR spectrum of the product in liquid suspension…

of bacteria and other microorganisms. Consequently, the polycationic AMPs are selectively attracted to the negatively charged bacterial targets but not to the mammalian cells, which is the very first step in their mechanism of action. This mutual electron affinity is responsible for selective antimicrobial targeting relative to host tissues.…

Kaicheng Tan Dr Erika Harnett ESS 102 20 January 2017 In the year 2030, astronaut Brian and his crew start a mission heading to Mars to become the first man on it. Their main goals are to see what things are there in the eye, bring back some samples of the land, and search for the possibility of life in depth. It only takes them a few days to reach the Mars using the Electro Magnetic Drive enabled spacecraft. Unfortunately, right after they land on Mars, an unpredicted extreme solar wind and…