Since ancient times, some elements like carbon, copper, silver, gold, iron, mercury, lead, and tin was known to Indians, Egyptians, Romans, Chinese and Greeks as people used to use these elements already. Among these, the first element to be discovered is considered to be copper. In ancient times, charcoal was widely used in the day-to-day lives of people and it was used to reduce zinc, copper, and tin from their respective ores.
After ancient age, came the time of Alchemists i.e., from 1 A.D. to 1735. Magnus discovered arsenic in 1250. Nicolas LÃ©mery discovered antimony in 1707. Henning Brand, a German scientist discovered phosphorus in 1669. Naturally occurring phosphorus exists as P4 in two forms: red and white phosphorus. White phosphorus is toxic while red phosphorus is used in safety matchsticks.
Modern age discoveries
Andreas Marggraf, a German chemist discovered zinc in 1746. Georg Brandt discovered cobalt in 1735. In 1735, Antonio de Ulloa discovered platinum in South America. In 1751, Axel Fredrik Cronstedt discovered nickel in Sweden while extract copper from a mineral named fake copper which is now called niccolite. Hydrogen was the elemental gas to be discovered and was discovered by Cavendish in 1766 by his observation that some gas is evolved on the reaction of metal with acids. Nitrogen was discovered by Rutherford in 1772. Oxygen was discovered by Priestley and Scheele in 1774. Chlorine was discovered by Scheele in 1774. Manganese was discovered by Gahn, Scheele, and Bergman in 1774. Peligot discovered uranium in 1789. Titanium was discovered by Gregor in 1791. Yttrium was discovered by Gadolin in 1794. Chromium and berrylium were discovered by Vauquelin in 1797 and 1798 respectively. Vanadium was discovered by del Rio in 1801 from columbite ore. Hatchett discovered niobium in 1801. Ekeberg discovered tantalum in 1802. In 1803, Berzelius & Hisinger; Klaproth discovered cerium. Wollaston discovered palladium and rhodium in 1803. Tennant discovered iridium in 1803. Humphery Davy discovered strontium, sodium, boron, barium, calcium and magnesium in 1807. After this discovery, he became the most famous chemist in the United Kingdom. In 1817, Arfvedson discovered lithium, Stromeyer discovered cadmium, Berzelius discovered selenium. Berzelius discovered silicon and zirconium in 1824. Bromine was discovered by Balard in 1827. Aluminum was discovered by Wohler in 1827. Thorium was discovered by Berzelius in 1827. Mosander discovered lanthanum in 1839 and terbium and erbium in 1843. Ruthenium was discovered by Klaus in 1844. Thallium was discovered by Crookesr in 1861. Indium was discovered by Riech and Richter in 1863. In 1860, Kirchoff (a physicist) and Bunsen (a chemist) shined light through an intense, hot and non-luminous flame and on analysis of the spectrum discovered cesium and rubidium. After this, the era of electrochemistry started and in 1866, Henri Moissan discovered fluorine by carrying out electrolysis of hydrogen fluoride acid (HF) and impurity of potassium fluoride was required. Henri Moissan got the Nobel Prize in chemistry in 1906. Gallium was discovered by Boisbaudran in 1875. Spectroscopy was used to discover many of the so-called rare earth metals which actually exist in high concentration in the Earthâ€™s crust. Since these metals are difficult to mine therefore were difficult to be discovered. These metals have a large number of applications. For example, neodymium and samarium are powerful magnets, so are used in electrons and yttrium is used in microwave resonators. Ytterbium was discovered by Marignac in 1878. In 1879, samarium was discovered by Boisbaudran. In 1878, scandium was discovered by Nilson and holmium was discovered by Delafontaine. Thulium was discovered by Cleve in 1879. Praseodymium and neodymium were discovered by von Weisbach in 1885. Gadolinium was discovered by Marignac in 1880. Dysprosium was discovered by Boisbaudran in 1886. Germanium was discovered by Winkler in 1886. Argon by discovered by Rayleigh & Ramsay in 1894. Helium was discovered by Ramsay in 1895. The noble gases krypton, neon and xenon were discovered by Ramsay and Travers in 1898. Some elements such as radium and polonium were discovered by the natural radioactive decay of some radioactive elements in 1898. Becquerel, Pierre and Marie Curie got the Noble Price in Physics in 1903 for explaining radioactivity phenomenon.
Get Professional Assignment Help Cheaply
Are you busy and do not have time to handle your assignment? Are you scared that your paper will not make the grade? Do you have responsibilities that may hinder you from turning in your assignment on time? Are you tired and can barely handle your assignment? Are your grades inconsistent?
Whichever your reason is, it is valid! You can get professional academic help from our service at affordable rates. We have a team of professional academic writers who can handle all your assignments.
Why Choose Our Academic Writing Service?
- Plagiarism free papers
- Timely delivery
- Any deadline
- Skilled, Experienced Native English Writers
- Subject-relevant academic writer
- Adherence to paper instructions
- Ability to tackle bulk assignments
- Reasonable prices
- 24/7 Customer Support
- Get superb grades consistently
Online Academic Help With Different Subjects
Students barely have time to read. We got you! Have your literature essay or book review written without having the hassle of reading the book. You can get your literature paper custom-written for you by our literature specialists.
Do you struggle with finance? No need to torture yourself if finance is not your cup of tea. You can order your finance paper from our academic writing service and get 100% original work from competent finance experts.
While psychology may be an interesting subject, you may lack sufficient time to handle your assignments. Don’t despair; by using our academic writing service, you can be assured of perfect grades. Moreover, your grades will be consistent.
Engineering is quite a demanding subject. Students face a lot of pressure and barely have enough time to do what they love to do. Our academic writing service got you covered! Our engineering specialists follow the paper instructions and ensure timely delivery of the paper.
In the nursing course, you may have difficulties with literature reviews, annotated bibliographies, critical essays, and other assignments. Our nursing assignment writers will offer you professional nursing paper help at low prices.
Truth be told, sociology papers can be quite exhausting. Our academic writing service relieves you of fatigue, pressure, and stress. You can relax and have peace of mind as our academic writers handle your sociology assignment.
We take pride in having some of the best business writers in the industry. Our business writers have a lot of experience in the field. They are reliable, and you can be assured of a high-grade paper. They are able to handle business papers of any subject, length, deadline, and difficulty!
We boast of having some of the most experienced statistics experts in the industry. Our statistics experts have diverse skills, expertise, and knowledge to handle any kind of assignment. They have access to all kinds of software to get your assignment done.
Writing a law essay may prove to be an insurmountable obstacle, especially when you need to know the peculiarities of the legislative framework. Take advantage of our top-notch law specialists and get superb grades and 100% satisfaction.
What discipline/subjects do you deal in?
We have highlighted some of the most popular subjects we handle above. Those are just a tip of the iceberg. We deal in all academic disciplines since our writers are as diverse. They have been drawn from across all disciplines, and orders are assigned to those writers believed to be the best in the field. In a nutshell, there is no task we cannot handle; all you need to do is place your order with us. As long as your instructions are clear, just trust we shall deliver irrespective of the discipline.
Are your writers competent enough to handle my paper?
Our essay writers are graduates with bachelor's, masters, Ph.D., and doctorate degrees in various subjects. The minimum requirement to be an essay writer with our essay writing service is to have a college degree. All our academic writers have a minimum of two years of academic writing. We have a stringent recruitment process to ensure that we get only the most competent essay writers in the industry. We also ensure that the writers are handsomely compensated for their value. The majority of our writers are native English speakers. As such, the fluency of language and grammar is impeccable.
What if I don’t like the paper?
There is a very low likelihood that you won’t like the paper.
- When assigning your order, we match the paper’s discipline with the writer’s field/specialization. Since all our writers are graduates, we match the paper’s subject with the field the writer studied. For instance, if it’s a nursing paper, only a nursing graduate and writer will handle it. Furthermore, all our writers have academic writing experience and top-notch research skills.
- We have a quality assurance that reviews the paper before it gets to you. As such, we ensure that you get a paper that meets the required standard and will most definitely make the grade.
In the event that you don’t like your paper:
- The writer will revise the paper up to your pleasing. You have unlimited revisions. You simply need to highlight what specifically you don’t like about the paper, and the writer will make the amendments. The paper will be revised until you are satisfied. Revisions are free of charge
- We will have a different writer write the paper from scratch.
- Last resort, if the above does not work, we will refund your money.
Will the professor find out I didn’t write the paper myself?
Not at all. All papers are written from scratch. There is no way your tutor or instructor will realize that you did not write the paper yourself. In fact, we recommend using our assignment help services for consistent results.
What if the paper is plagiarized?
We check all papers for plagiarism before we submit them. We use powerful plagiarism checking software such as SafeAssign, LopesWrite, and Turnitin. We also upload the plagiarism report so that you can review it. We understand that plagiarism is academic suicide. We would not take the risk of submitting plagiarized work and jeopardize your academic journey. Furthermore, we do not sell or use prewritten papers, and each paper is written from scratch.
When will I get my paper?
You determine when you get the paper by setting the deadline when placing the order. All papers are delivered within the deadline. We are well aware that we operate in a time-sensitive industry. As such, we have laid out strategies to ensure that the client receives the paper on time and they never miss the deadline. We understand that papers that are submitted late have some points deducted. We do not want you to miss any points due to late submission. We work on beating deadlines by huge margins in order to ensure that you have ample time to review the paper before you submit it.
Will anyone find out that I used your services?
We have a privacy and confidentiality policy that guides our work. We NEVER share any customer information with third parties. Noone will ever know that you used our assignment help services. It’s only between you and us. We are bound by our policies to protect the customer’s identity and information. All your information, such as your names, phone number, email, order information, and so on, are protected. We have robust security systems that ensure that your data is protected. Hacking our systems is close to impossible, and it has never happened.
How our Assignment Help Service Works
1. Place an order
You fill all the paper instructions in the order form. Make sure you include all the helpful materials so that our academic writers can deliver the perfect paper. It will also help to eliminate unnecessary revisions.
2. Pay for the order
Proceed to pay for the paper so that it can be assigned to one of our expert academic writers. The paper subject is matched with the writer’s area of specialization.
3. Track the progress
You communicate with the writer and know about the progress of the paper. The client can ask the writer for drafts of the paper. The client can upload extra material and include additional instructions from the lecturer. Receive a paper.
4. Download the paper
The paper is sent to your email and uploaded to your personal account. You also get a plagiarism report attached to your paper.
PLACE THIS ORDER OR A SIMILAR ORDER WITH US TODAY AND GET A PERFECT SCORE!!!