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PLEASE ANSWER ALL 4 THANK YOU VERY MUCH!!!! 1. How was the Periodic Table originally organized?...

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Chemistry

PLEASE ANSWER ALL 4 THANK YOU VERY MUCH!!!!

1. How was the Periodic Table originally organized? Explain thecurrent organization of the Periodic Table and why it is a moreaccurate layout of the elements.

2. What is the difference between groups and periods? What arethe common names for groups IA, IIA, VIIA, VIIIA?

3. Why were elements in group 18, VIIIA, formerly known as inertgases? How is the current name of “noble gases” more appropriate?Provide examples of involved elements.

4. Hydrogen can belong to two groups on the Periodic Table, whatare they? Which group do you believe hydrogen fits best in? Explainwhy.

Answer & Explanation Solved by verified expert
4.0 Ratings (530 Votes)
The first attempt was made by Antoine Lavoisier in late 1800 centuries but since then it almost took 100 years to make a rationalised periodic table It was first done by Dmitri Mendeleev and contribution also made by Meyer Mendeleev formed his periodic table on increasing trend of atomic weights of the elements Thus Hydrogen came first at top of the table then comes Helium at top end of the table then comes Lithium Boron and so on So first periodic table was made on the basis of the atomic weight of elements But after This was erroneous Many trend predicted with this didnt match the practical measures A more rational    See Answer
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