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Mendeleev's Periodic Table was superior to Newlands' because it organized elements based on Atomic Mass and allowed for the prediction of undiscovered elements, leaving gaps for them. Mendeleev also recognized the importance of grouping elements with similar chemical properties, leading to a more functional arrangement. In contrast, Newlands' table was based on a simpler pattern that resulted in inconsistencies, such as grouping elements with dissimilar properties in the same category. Mendeleev's approach laid the groundwork for the modern periodic table and the concept of periodicity.
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What was wrong with newlands periodic table?
it wasn't a real table
Why didnt helium and neon appear in Newlands table?
Helium and neon did not appear in Newlands' table because they are noble gases, which were not discovered until after Newlands' periodic table had been proposed. The noble gases were not known at the time when Newlands arranged the elements based on their properties.
Why was Newland's periodic table rejected?
The table of Newlands was only an incomplete precursor of the Mendeleev table.
Why was neon and helium missing from Newlands periodic table?
Neon and helium were missing from Newlands' periodic table because they are noble gases and were not well understood at the time. These gases are chemically inert and do not readily form compounds with other elements, making them distinct and not fitting into the periodic trends that Newlands was trying to establish.
How many groups did newlands periodic table have?
Newland arranged all the then known elements into seven groups in his 'law of octaves'
What was the problem with mandeleevs periodic table?
Beacuse he was gayyh
Which group is missing from john newlands periodic tabale?
The noble gases group is missing from John Newlands' periodic table. The noble gases were not discovered until after Newlands proposed his periodic table in 1864.
What was wrong with newlands periodic table?
it wasn't a real table
Why didnt helium and neon appear in Newlands table?
Helium and neon did not appear in Newlands' table because they are noble gases, which were not discovered until after Newlands' periodic table had been proposed. The noble gases were not known at the time when Newlands arranged the elements based on their properties.
Why was Newland's periodic table rejected?
The table of Newlands was only an incomplete precursor of the Mendeleev table.
Why was Newlands and periodic table rejected?
Newlands' periodic table was rejected because it had gaps and did not account for newly discovered elements. The periodic table was improved by Mendeleev's table, which arranged elements in order of increasing atomic weight and left gaps for undiscovered elements. This allowed for a more accurate prediction of the properties of missing elements.
How many elements had they discovered in 1865 when Newlands was developing the Periodic Table?
62
Why was neon and helium missing from Newlands periodic table?
Neon and helium were missing from Newlands' periodic table because they are noble gases and were not well understood at the time. These gases are chemically inert and do not readily form compounds with other elements, making them distinct and not fitting into the periodic trends that Newlands was trying to establish.
What month was the periodic table created in?
August 20, 1864 was when John Alexander Reina Newlands produced the first periodic table of the elements.
How many groups did newlands periodic table have?
Newland arranged all the then known elements into seven groups in his 'law of octaves'
How was it hard to decide the periodic table?
Many attempts were made by Dobereiner , Newlands and Mendeleev in initial stages. Later on , the idea of arranging elements in increasing atomic number came up which is the today's periodic table.
When did chlorine get placed in the periodic table?
1806 was the date of first recognition of chlorine as an element. Chlorine was placed in all of the first three attempts at periodic classification -- Newlands in 1864, Mendeleev and Lothar Meyer in 1869. There was really no such thing as a 'periodic table' before 1869.
