![]() ![]() ![]() This arrangement of elements is called as Newland’s law of Octave. According to him if the elements are arranged in the order of their increasing atomic masses the eighth element starting from given one is similar in properties to the first one. (b) Newland’s Law of Octave : He was the first to correlate the chemical properties of the elements with their atomic masses. Li Na K 7 23 39 7+39 / 2 = 23 Fe Co Ni 55.85 58.93 58.71 nearly same atomic masses It was restricted to few elements, therefore discarded. This helps to prevent information overload for the student.PERIODIC TABLE & PERIODICITY Development of Modern Periodic Table : (a) Dobereiner’s Triads : He arranged similar elements in the groups of three elements called as triads, in which the atomic mass of the central element was merely the arithmetic mean of atomic masses of other two elements or all the three elements possessed nearly the same atomic masses. It can be set-up to include only the facts that the student need to utilize or learn. There is also a great customizable Printable Periodic Table of Elements for use as a study guide or reference. The Blank Periodic Table of Elements is also excellent for recalling elements and there position on the table. ![]() It can be customized with up to 24 problems covering any range of elements that the student needs to practice. After studying the flashcards students can practice recalling what they learned with the Periodic Table Worksheet. They also work well for creating an oversized or even wall-sized Periodic Table of Elements. The Periodic Table Flashcards are a great resource for memorizing element names, symbols, atomic numbers, and more. Many student’s first encounter with the periodic table is when they are assigned to memorize various elements and symbols. The following resources are designed to help students study and learn the periodic table. The Periodic Table of Elements is an important part of every student’s science education. ![]()
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