10 Facts About the Periodic Table of Elements

10 Facts About the Periodic Table of Elements The periodic table is a chart that arranges the chemical elements in a useful, logical manner. Elements are listed in order of increasing atomic number, lined up so elements that exhibit similar properties are arranged in the same row or column as one another. The periodic table is one of the most useful tools of chemistry and the other sciences. Here are 10 fun facts to boost your knowledge: Although Dmitri Mendeleev is most often cited as the inventor of the modern periodic table, his table was just the first to gain scientific credibility. ​It wasnt the first table that organized the elements according to periodic properties.There are  about  90 elements on the periodic table that occur in nature. All of the other elements are strictly human-made. Some sources state more elements occur naturally because heavy elements may transition between elements as they undergo radioactive decay.Technetium was the first element to be made artificially. It is the lightest element that has only radioactive isotopes (none are stable.)The International Union of Pure Applied Chemistry, IUPAC, revises the periodic table as new data becomes available. At the time of this writing, the most recent version of the periodic table was approved in November 2016.The rows of the periodic table are called periods. An elements period number is the highest unexcited energy level for an ele ctron of that element. Columns of elements help to distinguish groups in the periodic table. Elements within a group share several common properties and often have the same outer electron arrangement.Most of the elements on the periodic table are metals. The alkali metals, alkaline earths, basic metals, transition metals, lanthanides, and actinides all are groups of metals.The present periodic table has room for 118 elements. Elements arent discovered or created in order of atomic number. Scientists are working on creating and verifying elements 119 and 120, which will change the appearance of the table, though they were working on element 120 before element 119. Most likely, element 119 will be positioned directly below francium and element 120 directly below radium. Chemists may create much heavier elements that may be more stable because of special properties of certain combinations of proton and neutron numbers.Although you might expect atoms of an element to get larger as their atomic number increases , this does not always occur because the size of an atom is determined by the diameter of its electron shell. In fact, element atoms usually decrease in size as you move from left to right across a row. The main difference between the modern periodic table and Mendeleevs periodic table is that Mendeleevs table arranged the elements in order of increasing atomic weight, while the modern table orders the elements by increasing atomic number. For the most part, the order of the elements is the same between both tables, though there are exceptions.

Btec Essay Example

Btec Essay Example Btec Essay Btec Essay The purpose of this assignment: In this assignment you will be introduced to the different forms of businesses with a umber of different purposes and forms of ownership. They have a range of different stakeholders within and outside of them who have different points of view can influence what the organization does. Scenario You work within an important functional unit of the Bristol City Council, the Economic Development Unit. The Council is considering developing a Business Park on the outskirts of Bristol and this important unit deals with the planning and analysis of employment trends in the Bristol area, as well as promoting the area as a good place to do business. The aim of the council is to encourage new businesses to locate to the new business park so that Jobs are created and the local economy grows. One of the strategies of the unit is to encourage a wide range of types of organization, from a range of sectors (both public private) to consider relocating here. You are required to investigate some organizations create a well structured report about them, so that the staff of your unit, as well as local councilors, will know about possible new businesses in the area. You are to focus on two contrasting organizations this could mean from the public and private sector or two different types Trot Walt Task 1 In letter sector. Business organizations exist for many different purposes and have a range of aims and objectives. Privately owned businesses usually aim to make a profit for the owner(s); publicly owned organizations work to deliver services and there are many organizations working for a common cause or service rather than a profit. All these businesses employ staff and use other resources and are important to the economy off region. ) Select two contrasting business organizations in your local area that might be interested in relocating to the new business park. B) Describe the purpose ownership of each business. Task 1 addresses the Pl criterion. Deadline for Task Date handed back Task 2 All organizations have groups or individuals who are said to be stakeholders in the business. This nearness that they have an interest in the actions, performance or plans of the business. For example, a decision to move location affects staff, suppliers, neighbors and customers, all of whom are stakeholders. To help staff understand how stakeholders influence business organizations, in the next section of your report you should: Describe the different stakeholders of each of the selected contrasting organizations Task 1 addresses the UP criterion. Task 3 In doing the above task you have mentioned stakeholders and referred to the fact that they tend to look at organizations from different viewpoints. This nearness that they can try to influence decision makers for different reasons. For example, a worker finding out that the business is to move to new premises may protest Ana try to stop tons; a suppler won thanks Nat tons would De netter Tort deliveries would support the decision. Stakeholders have many reasons for expressing their views. In the next section of your report, explain the points of view of different stakeholders seeking to influence the aims and objectives of these two contrasting organizations. What are they trying to achieve from influencing the business? What impact do they have on shaping the aims and objectives? Task 1 addresses the MI criterion. This brief has been verified as being fit for purpose Assessor Signature Date Internal verifier Assessment Grading Criteria To achieve the pass criteria the evidence must show that the learner is able to; Pl Describe the type of business, purpose and ownership of two contrasting organizations UP Describe the different stakeholders who influence the purpose of two contrasting businesses To achieve the merit criteria the evidence must show that the learner is able to; MI explain the points of view of different stakeholders seeking to influence the aims and objectives of two contrasting organizations To achieve the distinction criteria the evidence must show that the learner is able to; n/a