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1) which letter does not comes in periodic table 2) which is the most acaring letter in periodic tables3) define phylum : annelida4) what thing are made you of caco3 and sio25) name of the researchers who found zero and explainIF ANYONE GAVE ALL CORRECT ANSWER EITHOUT GOOGLING THEN I WILL MARK HIM BRILLIANT AND ALSO FOLLOW THEY PERSON. ​

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tion:Earlier Attempts at Classification of ElementsScience has made some giant leaps in the last century. Some stunning discoveries and INVENTIONS. In the field of chemistry also startling discoveries have been made. But none as significant as the Modern Periodic Table. But it was a long road to get here. Let us TAKE a journey and look at the earlier attempts at classification of elements.SolveQuestionsSuggested Videos Earlier Attempts at Classification of ElementsAs said before the journey to our current periodic table was a long and arduous one. Many scientists and chemists tried to attempt to classify the elements in a LOGICAL way. The first and most apparent one was to classify all elements into metals and non-metals. The concept of metalloids was still non-existent. But many scientists and chemists WENT a step further to find a more sophisticated system of classifying the elements. Some were more successful than others. Let us take a look at few of these attempts.Quick summarywith storiesMendeleev's Periodic Table - I3 mins readMendeleev's Periodic Table - II2 mins readBrowse more Topics under Periodic Classification Of ElementsModern Periodic TablePosition of Elements in the Modern Periodic TableTrends in the Modern Periodic TableDobereiner’s



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