Periodic table of elements names and numbers
[DOC File]Periodic Table of Elements Exercize
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The periodic table is so named because as atomic numbers increase elements tend to line up under previous elements with similar properties. Thus, the vertical groups indicated above contain elements with very similar chemical properties. Complete the following tasks using the blank periodic table provided. Use you textbook (Ch 4.8) as a guide.
[DOCX File]Periodic Table questions
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Give the names and chemical symbols for the elements that correspond to these atomic numbers: a. 10b. 18c. 36d. 90 List, by number, both the period and group of each of these elements.
[DOC File]The 'Street Chemist' Part-2 - suttercountyfire .org
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Elements that have 83 or more protons are all radioactive. Elements on the periodic table can be divided into three groups, primary elements, transition elements and rare-earth elements. The primary elements have a definite number of electrons in the outer shell. Primary elements are located in the two "towers" at each end of the periodic table.
[DOC File]A Look at the Past:
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The modern Periodic Table of the Elements still uses rows and columns. The columns, still called families, consist of elements with similar properties. The rows, still called periods, list the elements by atomic number, increasing by 1 as you move from left to right. At the present time, the Periodic Table of the Elements lists 112 elements.
[DOC File]PERIODIC TABLE
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PERIODIC TABLE. Development of the Periodic Table (pp. 348 - 352) 1. In the late 1790s Lavoisier compiled a list of 23 known elements. 2. During the 1800s many more were discovered as scientists used electricity to separate compounds and newly developed instruments, such as the spectrometer, to identify the elements.
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